Pin nixos version

Add nix comments

imp => imp2

Update README.md

Handle syntax highlighting for imp/zig in cases where a line crosses the edge of the window

Add commit shortcut

Use imp db

Handle warnings from imp repl

Remove dead code

Try out fish

Add preimp to projects

Add note about building

Bump to zig 0.9.0

Add note about building

Bump zig version

Remove dump

Makefile for wip arch support; update Zig mutex api

Bump zig version

Duh

Various selector bugfixes