v2.3.6.1 - on_focus fix

Only change this release is a minor fix to an issue where on_focus callback might not trigger in certain themes. Thanks to marc2k3 for the fix.

v2.3.6

v2.3.6

• A new IGdiBitmap InvertColours method has been added. Calling this on a bitmap will create a negative image (i.e. blacks become whites, whites become blacks, colors become trippy and weird).
• Minor sample fixes.

v2.3.5

This is marc2k3's last official release.

v2.3.5

• Add plman.GetPlaylistLockFilterMask. It's recommended that you replace any usage of plman.IsPlaylistLocked with this as you can now determine the type of locks in place.
• Add plman.GetPlaylistLockName.
• Restore compatibility with foo_popup_panels when used from within default UI. This was broken in v2.3.4.
• fb.CheckClipboardContents and fb.GetClipboardContents no longer require a window_id parameter. If supplied, it will be silently ignored.
• Minor sample fixes.