My cli calculator kalc is pretty good now

Over the past 9 months I have been developing my calculator on the side and now I consider it alot nicer and more user friendly then other calculators like qalc or calc, at this point it supports complex numbers, vectors, matrixes, userset functions or variables, many types of graphs, while concurrently printing output to terminal so you can see if you made a mistake more obvertly. with plans of supporting recursive functions and some semblance of a CAS system to support some derivitives and integrals eventually. would love some more suggestions on ways I can improve this. (still need to actually document code and have unit tests though lol) https://github.com/bgkillas/kalc