Backport changes from retired 2.0 branch

[yaxu]

The old 2.0-dev branch is now retired.

Some changes should be backported to the active dev branch.

PRs to look at:

• [ ] #1055
• [ ] #1027
• [x] #1006
• [ ] #1012
• [x] #1007 ref #1074
• [x] #995

cycseq things

• [ ] https://github.com/tidalcycles/Tidal/commit/62c2eec545ea97c1c3a971ed3e63c5271607313c
• [ ] move base package to tidal-core, splitting out tidal-params-dirt and tidal-stream

[matthewkaney]

1081 addresses the Sound.Tidal.Boot changes and is ready for review. I've mostly got the handshake OSC changes ported too, but I want to add a couple tests and bug fixes to address #1030.

I'm also interested in taking a look at some of the package reorganization code, but can approach that more piecemeal.