Translation layer for depselector; messy code in depsolver_gecode.erl
needs cleanup, and there's some interface layer work.
Minor fixup and debugs.
More tests.
Processor fixes and conversion improvements. PES style constraints still have issues.
Enable more tests.
Test constraints with versions as strings
Add between constraint
Rip out unused code
Add support for between and any constraints
Cleanups and lots of debug code.
Fix up normalization code.
More tests work
Indent pass
Cleanup more tests for new format.
Explain constraint generation better.
Fix ~> operator and tests