Minor cleanup
Count and report number of potential breaking changes (removals and modifications)
Improved parsing of instances
Updated documentation with breaking changes counter
Fixed typo
Removed cabal.config, added versions to .cabal
Improved type comparison (parse with haskell-src-exts instead of just doing a string compare)
Derive module modification status from export modification list
less restrictive lower bounds

the lower bounds have been generated with cabal-rangefinder.