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- ported Make track , and Clear track (ctrl-t, Alt-t)
- make track is a direct port does not use context data loops
- make Track crashes as Constraints have not been ported yet
- added select_extend to mouse select so now you can use shift again
- Still does not use Context data loops as this get all messed up, kaito can you look into it
- currently only works with 1 modifier key at a time so ctrl+alt does not work, until i can figure out how best to achieve this
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