Allow for greater flexibility in setting curl parameters by passing in an array.
Merge pull request #332 from Awnage/master

Add ability to use a proxy.
provider list converted into a markdown table
Fix CS
Prepare 2.8.0 release
Bump version to 3.0.0-dev

Yes, Geocoder 3 has begun!
Move IpGeoBase provider to geocoder-extra (#342)
Move Baidu provider to geocoder-extra (#341)
Move DataScienceToolkit provider to geocoder-extra (#340)
Remove `OpenStreetMapsProvider` class (close #335)
Move GeoCoder.ca provider to geocoder-extra (close #337)
Move GeoCoder.us provider to geocoder-extra (close #338)
Move OIORest provider to geocoder-extra (#336)
Move IGN OpenLS provider to geocoder-extra (close #339)
Introduce egeloen/http-adapter