Initial release of kmatch

@micahhausler @wilduck this is the initial release of kmatch. We should be good to go on its RTD stuff. Let me know what you think about the library. Some of the diffs you see are related to me originally using the wrong template when I made the master repo
You'll get some sphinx warnings if your underline strings aren't the same length as the above text. I've found it useful to try and keep these the same so any legit sphinx warnings aren't drowned out.