Update flow types & add support for single level parenthesis in links
Changes:
- d26a295 fixes flow types for the latest version of flow as of writing, 0.111.1
- #74 allows one level of balanced parenthesis in link targets without escaping those parenthesis
This release also changes a bit of the internal structure of things. If you run into any issues with that or the above, please file an issue or message me on twitter @ariabuckles.