Try swapping in fastroute

[Firehed]

The regex-capture to fastroute-capture thing is a bit weird, but it's an ok first pass

This may fix #50 to some extent as well.

Needs WAY more testing and a way to set up caching and general configuration - or at least proper integration into the build_endpoint_list stuff

[codecov]

Codecov Report

Merging #51 into master will decrease coverage by 0.19%.
The diff coverage is 96.15%.

@@             Coverage Diff             @@
##             master      #51     +/-   ##
===========================================
- Coverage     97.65%   97.46%   -0.2%     
- Complexity      100      109      +9     
===========================================
  Files            17       17             
  Lines           299      316     +17     
===========================================
+ Hits            292      308     +16     
- Misses            7        8      +1

Impacted Files	Coverage Δ	Complexity Δ
src/Dispatcher.php	97.47% <96.15%> (-0.57%)	45 <4> (+9)

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[Firehed]

That most recent commit is currently broken, only due to some minor cleanup that needs to happen. It's directionally pretty close to the end-goal here (I think), pending some additional testing.

Good news: this routing separation helps with #53
Also good news: the crazy regex work is updated based on an actual application with some more-complex routes. It may be better to implement it differently, but does seem to correctly handle non-named capture groups and things of that nature.

Maybe-bad news: since FastRoute handles HEAD requests as it should (see #82), we will need to forcibly add some middleware to strip the body. Shouldn't be hard, but