Fixed source issues with new PHP version

2.2.1 Updated documentation

Solved 1-microdegree gap in a few spots on Earth, noticable now extre…

…me precision is possible

2.1.5 Added maxErrorinMeters to API

2.1.1 distanceInMeters added to Documentation

2.1.0. Rewrote fraction floating points to integer arithmetic

2.0.3. Unittest added to check if library works as expected

Release 2.0.0