Add event log when reusing existing relation on import #25
Small changes to import event log messages
Create missing source/target entities on import if needed #25
Guess entity type when creating from imported data #25
Handle ´ apostrophe in imported data #25
Make entity creation on import more flexible #25
Add pending test
Big refactoring to create missing entities while matching import data. #25

Iterating through the match results and creating the missing entities then did not make sense, as you end up creating entities for the same mismatched string, like company names. You could check for duplicates then, but it is much messier and does not make sense.
Change variable names in importer for clarity #25
Allow running an import as a dry run #25
Add NewRelic for performance monitoring. Helps with #52
Add RubyProf for profiling. Helps with #52

See https://github.com/ruby-prof/ruby-prof#profiling-rails for more details