Bump version to 3.1.0

Signed-off-by: Sashanoraa <sasha@noraa.gay>
Add flake info to README
_incr_version script sets flake version
Add Nix flake
Add Nix dev env
Add license Hippocratic-3.0-full
Add license FAFLO-0.2
Update deps and remove time 0.1 from deps

time 0.1 can cause segfaults
Update arch package
Bump version to 3.0.0

Signed-off-by: Sashanoraa <sasha@noraa.gay>
New and Improved <3

I've deleted the git history for personal reasons