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Merge pull request #1 from Canadensys/dev

Update dwca-reader, OccurrenceExtensionModel
#4 added load(auto_id, deepLoad) and reflected changes on load(auto_id). Tests added.
merged back with master
Merge branch 'dev' of github.com:WingLongitude/liger-data-access into WingLongitude-dev
Merge branch 'WingLongitude-dev' into dev
revert to Canadensys files