Release v2.1.0

Yasumi v2.0.0

Updated readme describing 1.8.x is a support branch.

Merge tag '1.8.0' into develop

Release v1.8.0

Updated for 1.7.0 release.

Signed-off-by: Sacha Telgenhof <[email protected]>

Updated changelog to reflect fix for UK.

Added missing test suite for Romania.

PSR-2 fixes (causing Travis to fail).

Updated documentation for 1.4.0 release.

Updated documentation for 1.3 release.