Rename the `length` assertion to `lengthEquals`
Expose proclaim as a function, for Node assert compatibility
Use proclaim for assertions
Use short-hand functions in tests
Restructure the main library file
Simplify the unit tests
A little bit of housekeeping
Update browser support details
Add assertions for `<`, `<=`, `>`, `>=`
Add a note on 1.x maintenance to the readme
Version 2.0.0