Redesigns, deletes and renames

Also noted authors propertly on contributed examples

Changed parameters order for consistency with LoadFontData() and other functions when an array is passed by parameter and array size is the following parameter.

It seems TCC was not casting correctly int values to float in some
specific situations

- Preparing MP3 files support
- Jumped version to raylib 2.0-dev (too many breaking changes...)

- Some examples tweaks
- Reviewed ImageFormat()
- Use float for text fontSize

Added support for noise image offset

Namely:
- GenImageHorizontalV
- GenImageHorizontalH
- GenImageChecked
- GenImageWhiteNoise
- GenImageCellular

The gradient implementation may be a bit naive, for example it doesn't do any gamma correction.

- Removed rbmf font example
- Reviewed physac examples