* Increased version number to 1.1-SNAPSHOT
+ Added some safe checks to the sprite class, so that there are no integer overflows
+ Added a SpriteTest test
* Ignored IntelliJ IDEA's custom annotations
+ Added license and developer info to all the POMs
* Travis does not seem to like the LATEST version...
* Testing the release plugin
* Ignored release.properties
- Removed dryRun setting, to finally test the plugin
Merge branch 'feature/Release_Plugin' into develop
[maven-release-plugin] prepare release Aritzh-1.1
Revert "[maven-release-plugin] prepare release Aritzh-1.1"

This reverts commit 135a951d74f40250e82031be87769467c5a56f70.
- Removed the maven-release-plugin, since it didn't work as expected
+ Added the repo to the AWT module, since it was failing because of that
Updated README.md

* Updated README.md to show the build status from Travis
* Changed Slick2D version so that it uses the one in maven central
* Moved the *Util classes to the util package
+ Added Nullable and NotNull annotations, so that no external depencencies are needed
* Updated to version 1.1
* Fixed import and released hotfix as version 1.1.1
Revert "* Fixed import and released hotfix as version 1.1.1"

This reverts commit 1781f0835bcb6ddf23a6a42ac2fc1929da012eac.
* Hotfix to fix wrong import, and release as 1.1.1