Motionless

Minor release of the motionless package

PRs since the last release:
- Add language parameter to all classes: https://github.com/ryancox/motionless/pull/33
- Remove unnecessary and invalid checks: https://github.com/ryancox/motionless/pull/35
- Fix Google APIs endpoint: https://github.com/ryancox/motionless/pull/36
- Fix URL query-string encoding: https://github.com/ryancox/motionless/pull/37
- Add support for clientid, channel and digitally signing requests: https://github.com/ryancox/motionless/pull/38
- Docs update: https://github.com/ryancox/motionless/pull/41
- Remove dependency to six : https://github.com/ryancox/motionless/pull/43

Thanks to all contributors.

This minor releases contains a couple of bugfixes and enhancements:
- Increased ``MAX_URL_LEN`` since google updated their limits (https://github.com/ryancox/motionless/issues/23)
- Bug in version number (https://github.com/ryancox/motionless/pull/25)
- New ``simplify_threshold_meters`` kwarg for gpolyencode (https://github.com/ryancox/motionless/pull/27)
- Marker hex codes are now accepted as marker color (https://github.com/ryancox/motionless/pull/29)

Thanks to all contributors!

Added a new dependency (six) in order to support both py2 and py3 with the same codebase. Updated the examples and added some tests and CI with Travis.