0.1.2.0

• Adds support for ghc 8.6.2, courtesy of @jkachmar.
• Adds a Cut effect which adds committed choice to nondeterminism.
• Adds a Cull effect which adds pruning to nondeterminism.
• Adds an example of using NonDet, Cut, and a character parser effect to define parsers.
• Fixes the table of contents links in the README.

0.1.1.0

• Adds a runNonDetOnce handler which terminates immediately upon finding a solution.

0.1.0.0

Initial release.