Merge pull request #114 from w3c/topic/rdfstore-typeclass-cleaning

Some improvements to come in the next mergers
Merge pull request #116 from read-write-web/topic/more-consistency

make Topic/more consistency more consistent
increase travis defaults
Merge branch 'topic/more-consistency' of https://github.com/w3c/banana-rdf into topic/more-consistency
Merge pull request #115 from w3c/topic/more-consistency

much better consistency all round ;-)
[ldpatch] Fix missing dependency for ldpatch for Scala 2.11.2.
Merge pull request #117 from w3c/fix/ldpatch-dependency

[ldpatch] Fix missing dependency for ldpatch for Scala 2.11.2.
fix imports (IntelliJ):
  - remove unused ones
  - organise alphabetically
  - organise in three sections: java, other, scala
  - reduce needeless complexity of relative imports
refactor isomorphism 4 extensibility + tests
move isomorphism code to iso directory
Ttrengthen isomorphism. 1million * improvement. Uses lazy data structure to explore possibilites. Calculates search space, and avoids searching through if too high.