Compile Deep Collections

[nixjdm]

Run-speed is important. Beyond finding ways to optimize parts of the pure python, Deep Collections could be compiled with Cython, mypyc, or something else.

At this stage, I want the basic distributable form of Deep Collections to remain pure Python and have 0 dependencies. We can also offer binaries made from something like Cython, as long as the end user doesn't need another dependency to use it. I'd prefer drop-in build steps that are easy to maintain, rather than introducing things like .pyx files or forked python files with numba decorators. The first step should be something simpler like cythonize.