8.5.3. finished multislot macro recorder

• new conditions (modifiers, timeouts)
• macro recording now handles multiple slots

I think this should be final release for the time being.

8.5.3. conditionals and mouse actions

• Added goto command
• Added mouse actions ("states")
• Added interrupt conditional (detects presses of other keys, allowing to mimic secondary roles)

8.3.5. asynchronous macro engine and runtime macro recording

• some commands renamed
• refactored macro engine to be able to run multiple macros "asynchronously" (e.g., macro-implemented hold layer switchers can now work recursively)
• added draft of runtime (vim-like) macros implemented on level of scancodes

8.5.3. with extended macro support

Basic implementation of extended macro actions.