Code refactoring

[ivanlanin]

Since namespace is closing by, here are some issues that I'd like to propose:

• Change "Section" folder to "Element" since all classes that we put there are not only for "section".
• Create a "Collection" or "Container" folder for Section, Header, Footer, and other classes that can contain elements. I admit that Cell, Footnote, and TextRun are confusing.
• Rename "Exceptions" into "Exception". All other folders are in singular forms.
• Lower case "Tests" into "tests" so we have all root folders in lower cases.
• Create a parent class for "Container" and "Element". PHP CPD reports too many similiar piece of code.
• Merge Table and TableFull style. They're the same.
• Merge Image and MemoryImage element. We can manage to see the difference internally.

Thanks.

[gabrielbull]

Tests should be test and have a structure like this: test/PhpWord/Tests/*

All source code should be in a directory named src and have a structure like this: src/PhpWord/*

[ivanlanin]

Ok. Should we create tests for samples too?

[gabrielbull]

No, samples are not really part of the project code base so they should not be tested with the rest of the project

[gabrielbull]

I've done some more research and a lot of libraries seems to have the tests directory names tests so in order to be in tune with the community I am going to rename the test directory to tests. The structure in the directory does not change, it will be tests/PhpWord/Tests/*

[ivanlanin]

Ok. I've also seen some projects include their samples for testing. This is one example. I think there's no harm in doing it.

[gabrielbull]

I guess there is no harm to the project in doing it, just more maintenance and work.

[ivanlanin]

Closed by #160