diff --git a/.scrutinizer.yml b/.scrutinizer.yml
index 6f982d8e89..c8fe57cf63 100644
--- a/.scrutinizer.yml
+++ b/.scrutinizer.yml
@@ -15,7 +15,7 @@ tools:
             ruleset: phpmd.xml.dist
     external_code_coverage:
         enabled: true
-        timeout: 900
+        timeout: 1200
     php_cpd: true
     # php_sim: # Temporarily disabled to allow focus on things other than duplicates
     #    min_mass: 40
diff --git a/.travis.yml b/.travis.yml
index 0ec84081e1..d63b7bb22c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,14 +9,14 @@ php:
     - 5.6
     - 7.0
     - 7.1
+    - 7.2
 
 matrix:
     include:
         - php: 5.6
           env: COVERAGE=1
     allow_failures:
-        - php: 7.0
-        - php: 7.1
+        - php: 7.2
 
 cache:
     directories:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 47567dfcad..93945189a9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,10 +3,10 @@ Change Log
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
-v0.14.0 (28 Dec 2017)
+v0.14.0 (29 Dec 2017)
 ----------------------
 This release fixes several bugs and adds some new features.
-This is the last version to support PHP 5.3
+This version brings compatibility with PHP 7.0 & 7.1
 
 ### Added
 - Possibility to control the footnote numbering - @troosan #1068
diff --git a/composer.json b/composer.json
index 2774ad98a9..3cc4b131cf 100644
--- a/composer.json
+++ b/composer.json
@@ -46,23 +46,22 @@
         ]
     },
     "require": {
-        "php": ">=5.3.3",
+        "php": "^5.3.3 || ^7.0",
         "ext-xml": "*",
         "zendframework/zend-escaper": "^2.2",
         "zendframework/zend-stdlib": "^2.2 || ^3.0",
         "phpoffice/common": "^0.2"
     },
     "require-dev": {
-        "phpunit/phpunit": "^4.8.36",
+        "phpunit/phpunit": "^4.8.36 || ^5.0",
         "phpdocumentor/phpdocumentor":"2.*",
-        "twig/twig":"1.27",
         "squizlabs/php_codesniffer": "^2.7",
         "friendsofphp/php-cs-fixer": "^2.0",
         "phpmd/phpmd": "2.*",
-        "phploc/phploc": "2.*",
+        "phploc/phploc": "2.* || 3.* || 4.*",
         "dompdf/dompdf":"0.8.*",
         "tecnickcom/tcpdf": "6.*",
-        "mpdf/mpdf": "5.*"
+        "mpdf/mpdf": "5.* || 6.* || 7.*"
     },
     "suggest": {
         "ext-zip": "Allows writing OOXML and ODF",
diff --git a/docs/ISSUE_TEMPLATE.md b/docs/ISSUE_TEMPLATE.md
index 58981f8eca..ee811b00a4 100644
--- a/docs/ISSUE_TEMPLATE.md
+++ b/docs/ISSUE_TEMPLATE.md
@@ -1,28 +1,35 @@
-Issue tracker is **ONLY** used for reporting bugs. NO NEW FEATURE ACCEPTED! Use [stackoverflow](https://stackoverflow.com/questions/tagged/phpword) for supporting issues.
+This is:
+
+- [ ] a bug report
+- [ ] a feature request
+- [ ] **not** a usage question (ask them on https://stackoverflow.com/questions/tagged/phpword)
 
 # Expected Behavior
 
 Please describe the behavior you are expecting.
 
-# Current Behavior
+### Current Behavior
 
 What is the current behavior?
 
-# Failure Information
+### Failure Information
 
 Please help provide information about the failure.
 
-## How to Reproduce
+### How to Reproduce
 
 Please provide a code sample that reproduces the issue.
 
 ```php
+<?php
+require __DIR__ . '/vendor/autoload.php';
+
 $phpWord = new \PhpOffice\PhpWord\PhpWord();
 $section = $phpWord->addSection();
 $section->...
 ```
 
-## Context
+### Context
 
 * PHP version:
 * PHPWord version: 0.14
diff --git a/docs/PULL_REQUEST_TEMPLATE.md b/docs/PULL_REQUEST_TEMPLATE.md
index ad9788c436..cff513a356 100644
--- a/docs/PULL_REQUEST_TEMPLATE.md
+++ b/docs/PULL_REQUEST_TEMPLATE.md
@@ -1,12 +1,11 @@
-# Description
+### Description
 
 Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context.
 
 Fixes # (issue)
 
-# Checklist:
+### Checklist:
 
-- [ ] I have commented my code, particularly in hard-to-understand areas
-- [ ] I have run phpunit, phpcs, php-cs-fixer, phpmd
+- [ ] I have run `composer check` and no errors were reported
 - [ ] The new code is covered by unit tests
 - [ ] I have update the documentation to describe the changes
diff --git a/run_tests.sh b/run_tests.sh
deleted file mode 100755
index a5d94259b8..0000000000
--- a/run_tests.sh
+++ /dev/null
@@ -1,20 +0,0 @@
-#!/bin/bash
-echo "Running composer update"
-composer update
-
-## PHP_CodeSniffer
-echo "Running CodeSniffer"
-./vendor/bin/phpcs src/ tests/ --standard=PSR2 -n --ignore=src/PhpWord/Shared/PCLZip
-
-## PHP-CS-Fixer
-echo "Running CS Fixer"
-./vendor/bin/php-cs-fixer fix --diff --verbose --dry-run
-
-## PHP Mess Detector
-echo "Running Mess Detector"
-./vendor/bin/phpmd src/,tests/ text ./phpmd.xml.dist --exclude pclzip.lib.php
-
-## PHPUnit
-echo "Running PHPUnit"
-./vendor/bin/phpunit -c ./
-
diff --git a/src/PhpWord/Element/AbstractElement.php b/src/PhpWord/Element/AbstractElement.php
index 81e185289d..a65c50f4d2 100644
--- a/src/PhpWord/Element/AbstractElement.php
+++ b/src/PhpWord/Element/AbstractElement.php
@@ -228,7 +228,7 @@ public function setElementIndex($value)
     /**
      * Get element unique ID
      *
-     * @return int
+     * @return string
      */
     public function getElementId()
     {
@@ -425,18 +425,18 @@ protected function setNewStyle($styleObject, $styleValue = null, $returnObject =
     /**
      * Set enum value
      *
-     * @param mixed $value
-     * @param array $enum
-     * @param mixed $default
+     * @param string|null $value
+     * @param string[] $enum
+     * @param string|null $default
      *
      * @throws \InvalidArgumentException
-     * @return mixed
+     * @return string|null
      *
      * @todo Merge with the same method in AbstractStyle
      */
     protected function setEnumVal($value = null, $enum = array(), $default = null)
     {
-        if ($value != null && trim($value) != '' && !empty($enum) && !in_array($value, $enum)) {
+        if ($value !== null && trim($value) != '' && !empty($enum) && !in_array($value, $enum)) {
             throw new \InvalidArgumentException("Invalid style value: {$value}");
         } elseif ($value === null || trim($value) == '') {
             $value = $default;
diff --git a/src/PhpWord/Element/Field.php b/src/PhpWord/Element/Field.php
index 6ea63c6b68..7b33a4799d 100644
--- a/src/PhpWord/Element/Field.php
+++ b/src/PhpWord/Element/Field.php
@@ -211,7 +211,7 @@ public function getOptions()
      * @throws \InvalidArgumentException
      * @return null|string|TextRun
      */
-    public function setText($text)
+    public function setText($text = null)
     {
         if (isset($text)) {
             if (is_string($text) || $text instanceof TextRun) {
diff --git a/src/PhpWord/Element/TrackChange.php b/src/PhpWord/Element/TrackChange.php
index d14fc201db..44327f263f 100644
--- a/src/PhpWord/Element/TrackChange.php
+++ b/src/PhpWord/Element/TrackChange.php
@@ -52,8 +52,6 @@ public function __construct($author, \DateTime $date = null)
     {
         $this->author = $author;
         $this->date = $date;
-
-        return $this;
     }
 
     /**
diff --git a/src/PhpWord/Metadata/Protection.php b/src/PhpWord/Metadata/Protection.php
index 35391cb20b..39ebc3dead 100644
--- a/src/PhpWord/Metadata/Protection.php
+++ b/src/PhpWord/Metadata/Protection.php
@@ -182,7 +182,7 @@ public function getSalt()
     /**
      * Set salt. Salt HAS to be 16 characters, or an exception will be thrown.
      *
-     * @param $salt
+     * @param string $salt
      * @throws \InvalidArgumentException
      * @return self
      */
diff --git a/src/PhpWord/Reader/Word2007/Settings.php b/src/PhpWord/Reader/Word2007/Settings.php
index c116425ef3..ccdbed2542 100644
--- a/src/PhpWord/Reader/Word2007/Settings.php
+++ b/src/PhpWord/Reader/Word2007/Settings.php
@@ -152,7 +152,7 @@ protected function setRevisionView(XMLReader $xmlReader, PhpWord $phpWord, \DOME
         $revisionView = new TrackChangesView();
         $revisionView->setMarkup(filter_var($xmlReader->getAttribute('w:markup', $node), FILTER_VALIDATE_BOOLEAN));
         $revisionView->setComments($xmlReader->getAttribute('w:comments', $node));
-        $revisionView->setInsDel($xmlReader->getAttribute('w:insDel', $node));
+        $revisionView->setInsDel(filter_var($xmlReader->getAttribute('w:insDel', $node), FILTER_VALIDATE_BOOLEAN));
         $revisionView->setFormatting(filter_var($xmlReader->getAttribute('w:formatting', $node), FILTER_VALIDATE_BOOLEAN));
         $revisionView->setInkAnnotations(filter_var($xmlReader->getAttribute('w:inkAnnotations', $node), FILTER_VALIDATE_BOOLEAN));
         $phpWord->getSettings()->setRevisionView($revisionView);
diff --git a/src/PhpWord/Shared/Converter.php b/src/PhpWord/Shared/Converter.php
index bae8985d37..56687c986a 100644
--- a/src/PhpWord/Shared/Converter.php
+++ b/src/PhpWord/Shared/Converter.php
@@ -33,7 +33,7 @@ class Converter
     /**
      * Convert centimeter to twip
      *
-     * @param int $centimeter
+     * @param float $centimeter
      * @return float
      */
     public static function cmToTwip($centimeter = 1)
@@ -44,7 +44,7 @@ public static function cmToTwip($centimeter = 1)
     /**
      * Convert centimeter to inch
      *
-     * @param int $centimeter
+     * @param float $centimeter
      * @return float
      */
     public static function cmToInch($centimeter = 1)
@@ -55,7 +55,7 @@ public static function cmToInch($centimeter = 1)
     /**
      * Convert centimeter to pixel
      *
-     * @param int $centimeter
+     * @param float $centimeter
      * @return float
      */
     public static function cmToPixel($centimeter = 1)
@@ -66,7 +66,7 @@ public static function cmToPixel($centimeter = 1)
     /**
      * Convert centimeter to point
      *
-     * @param int $centimeter
+     * @param float $centimeter
      * @return float
      */
     public static function cmToPoint($centimeter = 1)
@@ -77,8 +77,8 @@ public static function cmToPoint($centimeter = 1)
     /**
      * Convert centimeter to EMU
      *
-     * @param int $centimeter
-     * @return int
+     * @param float $centimeter
+     * @return float
      */
     public static function cmToEmu($centimeter = 1)
     {
@@ -88,8 +88,8 @@ public static function cmToEmu($centimeter = 1)
     /**
      * Convert inch to twip
      *
-     * @param int $inch
-     * @return int
+     * @param float $inch
+     * @return float
      */
     public static function inchToTwip($inch = 1)
     {
@@ -99,7 +99,7 @@ public static function inchToTwip($inch = 1)
     /**
      * Convert inch to centimeter
      *
-     * @param int $inch
+     * @param float $inch
      * @return float
      */
     public static function inchToCm($inch = 1)
@@ -110,8 +110,8 @@ public static function inchToCm($inch = 1)
     /**
      * Convert inch to pixel
      *
-     * @param int $inch
-     * @return int
+     * @param float $inch
+     * @return float
      */
     public static function inchToPixel($inch = 1)
     {
@@ -121,8 +121,8 @@ public static function inchToPixel($inch = 1)
     /**
      * Convert inch to point
      *
-     * @param int $inch
-     * @return int
+     * @param float $inch
+     * @return float
      */
     public static function inchToPoint($inch = 1)
     {
@@ -132,8 +132,8 @@ public static function inchToPoint($inch = 1)
     /**
      * Convert inch to EMU
      *
-     * @param int $inch
-     * @return int
+     * @param float $inch
+     * @return float
      */
     public static function inchToEmu($inch = 1)
     {
@@ -144,7 +144,7 @@ public static function inchToEmu($inch = 1)
      * Convert pixel to twip
      *
      * @param int $pixel
-     * @return int
+     * @return float
      */
     public static function pixelToTwip($pixel = 1)
     {
@@ -188,7 +188,7 @@ public static function pixelToEmu($pixel = 1)
      * Convert point to twip unit
      *
      * @param int $point
-     * @return int
+     * @return float
      */
     public static function pointToTwip($point = 1)
     {
@@ -210,7 +210,7 @@ public static function pointToPixel($point = 1)
      * Convert point to EMU
      *
      * @param int $point
-     * @return int
+     * @return float
      */
     public static function pointToEmu($point = 1)
     {
@@ -221,7 +221,7 @@ public static function pointToEmu($point = 1)
      * Convert EMU to pixel
      *
      * @param int $emu
-     * @return int
+     * @return float
      */
     public static function emuToPixel($emu = 1)
     {
diff --git a/src/PhpWord/Shared/Html.php b/src/PhpWord/Shared/Html.php
index 8310e515c2..d8a10b5702 100644
--- a/src/PhpWord/Shared/Html.php
+++ b/src/PhpWord/Shared/Html.php
@@ -518,6 +518,7 @@ private static function parseStyle($attribute, $styles)
     private static function parseImage($node, $element)
     {
         $style = array();
+        $src = null;
         foreach ($node->attributes as $attribute) {
             switch ($attribute->name) {
                 case 'src':
diff --git a/src/PhpWord/Shared/Microsoft/PasswordEncoder.php b/src/PhpWord/Shared/Microsoft/PasswordEncoder.php
index d3a03d9740..1c7b4c6c8e 100644
--- a/src/PhpWord/Shared/Microsoft/PasswordEncoder.php
+++ b/src/PhpWord/Shared/Microsoft/PasswordEncoder.php
@@ -165,7 +165,7 @@ private static function getAlgorithm($algorithmName)
     /**
      * Returns the algorithm ID
      *
-     * @param sting $algorithmName
+     * @param string $algorithmName
      * @return int
      */
     public static function getAlgorithmId($algorithmName)
diff --git a/src/PhpWord/Shared/ZipArchive.php b/src/PhpWord/Shared/ZipArchive.php
index bb42a92aff..3d8d0a4133 100644
--- a/src/PhpWord/Shared/ZipArchive.php
+++ b/src/PhpWord/Shared/ZipArchive.php
@@ -161,7 +161,7 @@ public function close()
     {
         if (!$this->usePclzip) {
             if ($this->zip->close() === false) {
-                throw new Exception("Could not close zip file {$this->filename}.");
+                throw new Exception("Could not close zip file {$this->filename}: ");
             }
         }
 
diff --git a/src/PhpWord/Style/Paper.php b/src/PhpWord/Style/Paper.php
index 2fbf59d282..09e4769e90 100644
--- a/src/PhpWord/Style/Paper.php
+++ b/src/PhpWord/Style/Paper.php
@@ -118,14 +118,14 @@ class Paper extends AbstractStyle
     /**
      * Width
      *
-     * @var int (twip)
+     * @var float (twip)
      */
     private $width;
 
     /**
      * Height
      *
-     * @var int (twip)
+     * @var float (twip)
      */
     private $height;
 
@@ -175,7 +175,7 @@ public function setSize($size)
     /**
      * Get width
      *
-     * @return int
+     * @return float
      */
     public function getWidth()
     {
@@ -185,7 +185,7 @@ public function getWidth()
     /**
      * Get height
      *
-     * @return int
+     * @return float
      */
     public function getHeight()
     {
diff --git a/src/PhpWord/Writer/PDF/MPDF.php b/src/PhpWord/Writer/PDF/MPDF.php
index 80c2eccf90..e238057b1f 100644
--- a/src/PhpWord/Writer/PDF/MPDF.php
+++ b/src/PhpWord/Writer/PDF/MPDF.php
@@ -17,6 +17,8 @@
 
 namespace PhpOffice\PhpWord\Writer\PDF;
 
+use PhpOffice\PhpWord\PhpWord;
+use PhpOffice\PhpWord\Settings;
 use PhpOffice\PhpWord\Writer\WriterInterface;
 
 /**
@@ -27,12 +29,14 @@
  */
 class MPDF extends AbstractRenderer implements WriterInterface
 {
-    /**
-     * Name of renderer include file
-     *
-     * @var string
-     */
-    protected $includeFile = 'mpdf.php';
+    public function __construct(PhpWord $phpWord)
+    {
+        if (file_exists(Settings::getPdfRendererPath() . '/mpdf.php')) {
+            // MPDF version 5.* needs this file to be included, later versions not
+            $this->includeFile = 'mpdf.php';
+        }
+        parent::__construct($phpWord);
+    }
 
     /**
      * Save PhpWord to file.
@@ -48,7 +52,13 @@ public function save($filename = null)
         $orientation = strtoupper('portrait');
 
         //  Create PDF
-        $pdf = new \mpdf();
+        if ($this->includeFile != null) {
+            // MPDF version 5.*
+            $pdf = new \mpdf();
+        } else {
+            // MPDF version > 6.*
+            $pdf = new \Mpdf\Mpdf();
+        }
         $pdf->_setPageSize($paperSize, $orientation);
         $pdf->addPage($orientation);
 
diff --git a/src/PhpWord/Writer/Word2007/Part/Comments.php b/src/PhpWord/Writer/Word2007/Part/Comments.php
index 4551ca921e..2b8f9267a2 100644
--- a/src/PhpWord/Writer/Word2007/Part/Comments.php
+++ b/src/PhpWord/Writer/Word2007/Part/Comments.php
@@ -29,7 +29,7 @@ class Comments extends AbstractPart
     /**
      * Comments collection to be written
      *
-     * @var \PhpOffice\PhpWord\Collection\Comments
+     * @var \PhpOffice\PhpWord\Element\Comment[]
      */
     protected $elements;
 
@@ -92,7 +92,7 @@ protected function writeComment(XMLWriter $xmlWriter, Comment $comment)
     /**
      * Set element
      *
-     * @param \PhpOffice\PhpWord\Collection\Comments $elements
+     * @param \PhpOffice\PhpWord\Element\Comment[] $elements
      * @return self
      */
     public function setElements($elements)
diff --git a/tests/PhpWord/Shared/ZipArchiveTest.php b/tests/PhpWord/Shared/ZipArchiveTest.php
index 91f0f030b1..cb095127a6 100644
--- a/tests/PhpWord/Shared/ZipArchiveTest.php
+++ b/tests/PhpWord/Shared/ZipArchiveTest.php
@@ -27,34 +27,34 @@
  */
 class ZipArchiveTest extends \PHPUnit\Framework\TestCase
 {
-    /**
-     * Test close method exception: Working in local, not working in Travis
-     *
-     * expectedException \PhpOffice\PhpWord\Exception\Exception
-     * expectedExceptionMessage Could not close zip file
-     * covers ::close
-     */
-    public function testCloseException()
-    {
-        // $zipFile = __DIR__ . "/../_files/documents/ziptest.zip";
-
-        // $object = new ZipArchive();
-        // $object->open($zipFile, ZipArchive::CREATE);
-        // $object->addFromString('content/string.txt', 'Test');
-
-        // // Lock the file
-        // $resource = fopen($zipFile, "w");
-        // flock($resource, LOCK_EX);
-
-        // // Closing the file should throws an exception
-        // $object->close();
-
-        // // Unlock the file
-        // flock($resource, LOCK_UN);
-        // fclose($resource);
-
-        // @unlink($zipFile);
-    }
+//     /**
+//      * Test close method exception: Working in local, not working in Travis
+//      *
+//      * expectedException \PhpOffice\PhpWord\Exception\Exception
+//      * expectedExceptionMessage Could not close zip file
+//      * covers ::close
+//      */
+//     public function testCloseException()
+//     {
+//         $zipFile = __DIR__ . "/../_files/documents/ziptest.zip";
+
+//         $object = new ZipArchive();
+//         $object->open($zipFile, ZipArchive::CREATE);
+//         $object->addFromString('content/string.txt', 'Test');
+
+//         // Lock the file
+//         $resource = fopen($zipFile, "w");
+//         flock($resource, LOCK_EX);
+
+//         // Closing the file should throws an exception
+//         $object->close();
+
+//         // Unlock the file
+//         flock($resource, LOCK_UN);
+//         fclose($resource);
+
+//         @unlink($zipFile);
+//     }
 
     /**
      * Test all methods
diff --git a/tests/PhpWord/Writer/ODTextTest.php b/tests/PhpWord/Writer/ODTextTest.php
index bb1b953821..1984de0f07 100644
--- a/tests/PhpWord/Writer/ODTextTest.php
+++ b/tests/PhpWord/Writer/ODTextTest.php
@@ -110,6 +110,7 @@ public function testSavePhpOutput()
         $section->addText('Test');
         $writer = new ODText($phpWord);
         $writer->save('php://output');
+        $this->assertNotNull($this->getActualOutput());
     }
 
     /**
diff --git a/tests/PhpWord/Writer/RTFTest.php b/tests/PhpWord/Writer/RTFTest.php
index f444204354..803087e567 100644
--- a/tests/PhpWord/Writer/RTFTest.php
+++ b/tests/PhpWord/Writer/RTFTest.php
@@ -111,5 +111,6 @@ public function testSavePhpOutput()
         $section->addText(htmlspecialchars('Test', ENT_COMPAT, 'UTF-8'));
         $writer = new RTF($phpWord);
         $writer->save('php://output');
+        $this->assertNotNull($this->getActualOutput());
     }
 }
diff --git a/tests/PhpWord/Writer/Word2007/Part/DocumentTest.php b/tests/PhpWord/Writer/Word2007/Part/DocumentTest.php
index 42c098cda7..6998e717ee 100644
--- a/tests/PhpWord/Writer/Word2007/Part/DocumentTest.php
+++ b/tests/PhpWord/Writer/Word2007/Part/DocumentTest.php
@@ -58,7 +58,8 @@ public function testWriteCustomProps()
         $docInfo->setCustomProperty('key6', new \DateTime());
         $docInfo->setCustomProperty('key7', time(), DocInfo::PROPERTY_TYPE_DATE);
 
-        TestHelperDOCX::getDocument($phpWord);
+        $doc = TestHelperDOCX::getDocument($phpWord);
+        $this->assertNotNull($doc);
 
 //         $this->assertTrue($doc->elementExists('/Properties/property[name="key1"]/vt:lpwstr'));
 //         $this->assertTrue($doc->elementExists('/Properties/property[name="key2"]/vt:bool'));