Python-omgeo

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* Expand information in UpstreamResponseInfo object
* Enhance logging

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* Wrap entire JSON result processing from geocoder in try/catch
* Add separate logger for stats from geocoder

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* IMPORTANT: the Geocoder.geocode() method now returns a dictionary instead
of a list of candidates. To just get a list of candidates, use
Geocoder.get_candidates(). This functions the same the Geocoder.geocode()
method in version 1.3.7.
* New dictionary return type includes a list of candidates as well as a
list of UpstreamResponseInfo objects, which include information about
the upstream API call, including response time and errors.
* Simplify error handling

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* Add CancelIfPOBox preprocessor and tests
* Add __unicode__() / __str__() method to PlaceQuery for string representation

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* Add SSH support for MapQuest
* Add CancelIfRegexInAttr preprocessor to avoid geocoding attempts if
a PlaceQuery instance attribute matches the given regex (such as a
PO Box)
* Add timeout option that can be included in the GeocodeService settings
parameter. There is now a default timeout of 10 seconds.

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* Geocoder().geocode() method can take one-line string OR PlaceQuery instance.
* Improve speed by avoiding postprocessing of empty list
* Add support for MapQuest licensed geocoding API using NAVTEQ data