Add LwjglHeadlessApplicationConfiguration
Add interval
Default to 60fps
Fixed error handling in AsyncExecutor's GWT emulation
Formatting
More buffer utils
Forgot to add generated cpp
Allow custom preferences locations on desktop,

See #918
- Implemented for Lwjgl and jglfw desktop backends
- Implements the alternative solution, instead of forcing XDG-compliancy
we allow the developer to choose
-Backwards compatible with old system by default
Typo fixes
Fix for pause() not being called when a draw call does not happen after iOS app pause
GWT ClassReflection: Added support for Constructors
Implemented getConstructor, getDeclaredConstructor and getConstructors in GWT's ClassReflection
Now there is also a ReflectionTest class which is run in GdxTests and in the GWT tests.
Set Type's fields, methods and constructors to empty arrays as default value.
Merge pull request #1122 from xoppa/3dapi

Add LwjglHeadlessApplicationConfiguration
Merge pull request #1146 from hneuer/refl

GWT ClassReflection: Added support for Constructors
Merge pull request #1143 from ericnondahl/master

Fix for pause() not being called on iOS backend
Merge pull request #1137 from Unkn0wn0ne/experimental-changes

Allowed custom preferences locations on desktop.
Merge pull request #1136 from xoppa/various

More buffer utils
Merge pull request #1134 from hneuer/asyncexecgwt

Fixed error handling in AsyncExecutor's GWT emulation