add optional attributes argument for AR base query
opencagedata geocoder: add tests for error states
opencagedata geocoder: add tests for error states
refactor alternate attributes to separate the coordinate options and remove instance variables
remove alternate_ from optional coordinate arguments
Merge pull request #692 from switzersc/master

add alternate attributes options for near_scope_options
Merge pull request #690 from mtmail/opencagedata-overlimittest

Opencagedata: additional tests
Document lat/log column specification with .near.
Prepare for release of gem version 1.2.4.