Ti842py

With fix:

This release adds `prgm` support. `prgm` will search the current directory for a file matching the provided name (case insensitive; extension of .8xp). If found, the file will be passed to the command `ti842py {filename} --run`, where `{filename}` is the name of the file. For example, `prgmTEST` would search for `TEST.8Xp` (case insensitive) in the current directory. If a path is given that contains `.` or `~`, or if the path is not all uppercase, the transpiler will assume that the path has been manually provided by the user (this will be useful once I implement a TI-BASIC shell).

- Fixed 2 - [diff](https://github.com/TabulateJarl8/ti842py/commit/80ae1515692236b9d955be2da04730a3217d3fdd#diff-0e3aa32bffe6e420ba2565b40e13b32dbec70b73c19832b624e51aff65b172e9R392)
- Fixed space key not being detected in getKey - [diff](https://github.com/TabulateJarl8/ti842py/commit/80ae1515692236b9d955be2da04730a3217d3fdd#diff-ace9d9ff02d437418a64ef44032489ab0d8f3badbb84f6523ccb6dfbbe540529R73)
- Fixed stdin being sent into terminal after program exit - [diff](https://github.com/TabulateJarl8/ti842py/commit/80ae1515692236b9d955be2da04730a3217d3fdd#diff-0e3aa32bffe6e420ba2565b40e13b32dbec70b73c19832b624e51aff65b172e9R522)
- Fixed stdin from `input()` being detected in getKey (80ae1515692236b9d955be2da04730a3217d3fdd)

First release of support for `Ans`. May be unstable

The `Draw` class had a few default arguments for color that were still the color name as a string which cased an error. This patch fixes that