Add extraction for release dates for the new-format (at least) ninjatune xls files.
Switch ninjatune release-event handling to use a list comprehension, remove some lambdas
Merge branch 'master' into ninjatune-release-dates
Merge branch 'master' into ninjatune-release-dates

Conflicts:
	geordi/geordi/data/mapping/indexes/ninjatune.py
Also parse oldstyle release event, though it doesn't provide countries.
Change to using a simple rule for old-style ninjatune dates, put in the split dates field instead of combined since we don't have countries, really.
Merge branch 'master' into ninjatune-release-dates

Conflicts:
	geordi/geordi/data/mapping/indexes/ninjatune.py
Merge branch 'ninjatune-release-dates'

* ninjatune-release-dates:
  Change to using a simple rule for old-style ninjatune dates, put in the split dates field instead of combined since we don't have countries, really.
  Also parse oldstyle release event, though it doesn't provide countries.
  Switch ninjatune release-event handling to use a list comprehension, remove some lambdas
  Add extraction for release dates for the new-format (at least) ninjatune xls files.