* v 0.3 2017-08-01
* renamed the main module to MixedTypesNumPrelude
* much faster compilation
* Ring and Field are now classes, not synonyms for large sets of constraints
* many fixes in collect-error framework and its use in division and power
* Overloaded if-then-else via -XRebindableSyntax
* compiling with ghc 8.2.1
* v 0.2.0.1
* fix compilation bug in test suite
* minor doc improvements
* fix Complex instances of error-throwing division (/!)
* v 0.2
* new CollectErrors wrapper
* CN, specialisation of CollectErrors to NumErrors
* numerical partial operators (eg division) return a CN type
* instances for Data.Complex
* v 0.1
* first release