Merge pull request #22 from pierrelgol/enhancements

Various enhancements / update of the std.builtin.Type enum usage

fixing escaped special chars

fixing bug with word boundary and passing type parameter on string cast

major update to backend. Character sets have dedicated objects instea…

…d of being spanned across multiple units. This removes NAND and simplies the tree builder. This also enables optimzations and future potential optimizations. Word Boundaries are also changed to work similar to PCRE with respect to captures in that they are no longer zero-length.

Merge pull request #18 from mnemnion/zig-build-zon

Zig build system

changing panic to debug assert

Merge pull request #17 from pierrelgol/testing-branch

 Formatted the CLI, Removed discussed functions Fixed styling, Added back test cases.

fixing reverse iterator single filter stride