v1.0.0

Welcome to version 1.0! This shouldn't actually be a breaking change, but it contains substantial changes and perf improvements. If you run into any trouble, you can stick with v0.x. (The actual validation performed is still the same.) Many thanks to @Adjective-Object for all your work here!

• Fixes bug related to extensionless files (#96)
• Adds a number of performance improvements around only loading the minimal necessary fences and source files (#97, #98, #99, #100).
• Adds a mode to do a faster partial fence validation based on a git commit (#101)