rg99 build

Prepare 2022-02-18 release based on upstream 2.6.2

Prepare 2022-02-18 release based on upstream 2.6.2

Updated docs and web pages for upcoming 2.6.2 release.

Updated readme files for 2.6.1 release.

Hot fix for reversed scroll direction when dragging input above or be…

…low Qt piano roll view.

Fixed build pass/fail reference in readme.md.

Update readme ad manual

Release 2021-07-25

The screenshot menu option now saves directly when the A button is

pressed withouth need to exit manually from menu to emulator.
Update readme.