Update dependencies

Update to peggy 4.0.1

Update to Peggy 4.0.0

Updated grammar to match Peggy 4.0.0

Add multiple semicolons, repeats.

Add support for Peggy 3.0.0's repeat syntax ("foo" |1..2, ","|), and Peggy 3.0.1's ability to have multiple semicolons between rules.

Capture semicolons

Semicolons from top-level initializers, initializers, and rules are now captured.
The outer brackets from top-level initializers are now captured.

First release

Everything seems to work.