v2.1 Compatibility Release
Version 2.1 of the PGD Community SDL2 Headers
Release notes:
- This is a compatibility release. Use this release only if necessary. See remarks below.
- It has all commits until the point of adding a folder structure to the project and shifting the unit files into the units folder (see PR #27). Compare the disucssion in issue #22.
- Shifiting the units into the unit folder may (1) raise difficulties in committing new changes if the branch was started before and (2) make updates of project research pathes necessary.