First release on GitHub

This is the first release on WinSys on GitHub after the conversion from the APL wiki.

Pre-GitHub releases:

• 2.6.0:
  Method History introduced.
  WinSys is now managed by acre 3.
• 2.5.0:
  • This version requires Dyalog 15.0 Unicode or better.
  • Old code removed.
  • New methods GetAllDrives and GetDriveAndType added.
  • ShellExecute is more flexible now regarding the right argument.
  • FindWindow added.
  • Bug fix: GetModuleFileName worked on 32-bit systems only.