Fix long import times

[lukew3]

Bug Description

It takes about 0.5 seconds to import the library. I think that the main issue causing this is the fact that all generators need to be instantiated on load.

Why we are using a Generator class:

• Hold an integer Id that identifies a generator despite new generators being added
• Hold metadata about a generator that can be used to build documentation
• Gain access to methods shared by all instances such as conversion to latex/asciimath format

Possibilities for how to best restructure:

• Each generator file simply contains a generator function, independent from any classes
• Generator files contain comments describing what they do
  • Docstrings
  • Maybe this would have to be python variables representing data, but this may cause memory issues
• A seperate txt file lists all generators in the order that they were added. This should contain the subject/generator_name
  • If a generator is deleted, it can be replaced with something like DELETED
  • Should be a function that can read this file into a python list and give it to the user
    • Another function should do the same thing but read metadata from each file and create a list similar to what getGenList does currently.
• Maybe have top-level functions that can take output from a generator and change formatting