Cleanup

[Jawnnypoo]

This performs some cleanup of the codebase, including:

• Removing deprecated methods
• Removing usage of certain deprecated methods
• Fixed lint warnings related to JavaDocs
• Fixed lint warnings related to redundency
• Add findAll to KTX
• Make KTX functions inline
• Update dependencies
• Remove a few completely unused classes.
• Remove outdated things from CONTRIBUTING doc

[codecov]

Codecov Report

Merging #861 into master will increase coverage by 0.13%.
The diff coverage is 22.22%.

@@             Coverage Diff              @@
##             master     #861      +/-   ##
============================================
+ Coverage     64.52%   64.66%   +0.13%     
+ Complexity     1907     1897      -10     
============================================
  Files           123      122       -1     
  Lines          9780     9704      -76     
  Branches       1373     1359      -14     
============================================
- Hits           6311     6275      -36     
+ Misses         2961     2924      -37     
+ Partials        508      505       -3

Impacted Files	Coverage Δ	Complexity Δ
...rse/src/main/java/com/parse/ParseCommandCache.java	2.18% <ø> (ø)	3 <0> (ø)	⬇️
parse/src/main/java/com/parse/OfflineStore.java	69.44% <ø> (ø)	45 <0> (ø)	⬇️
...in/java/com/parse/CachedCurrentUserController.java	93.96% <ø> (ø)	15 <0> (ø)	⬇️
...e/src/main/java/com/parse/ParseAnonymousUtils.java	44.44% <ø> (ø)	2 <0> (ø)	⬇️
...rc/main/java/com/parse/ParseRelationOperation.java	46.26% <ø> (ø)	22 <0> (ø)	⬇️
.../src/main/java/com/parse/ParseRESTFileCommand.java	83.33% <ø> (ø)	4 <0> (ø)	⬇️
parse/src/main/java/com/parse/ParseAnalytics.java	93.47% <ø> (+10.78%)	18 <0> (ø)	⬇️
.../main/java/com/parse/NetworkSessionController.java	100% <ø> (ø)	4 <0> (ø)	⬇️
parse/src/main/java/com/parse/ParseException.java	100% <ø> (ø)	4 <0> (ø)	⬇️
parse/src/main/java/com/parse/ParseConfig.java	97.22% <ø> (ø)	79 <0> (ø)	⬇️
... and 51 more

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[coveralls]

Coverage increased (+0.1%) to 69.868% when pulling bf6ed83 on Jawnnypoo:cleanup into 4030884 on parse-community:master.