Update versioneer and run cython from CMake

[clonker]

No description provided.

[codecov]

Codecov Report

Merging #228 (77109c7) into main (5397046) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #228      +/-   ##
==========================================
- Coverage   93.75%   93.74%   -0.01%     
==========================================
  Files         136      136              
  Lines       10816    10815       -1     
==========================================
- Hits        10140    10139       -1     
  Misses        676      676              

Impacted Files	Coverage Δ
deeptime/__init__.py	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 5397046...77109c7. Read the comment docs.