Supports Hoa\Math < 2.0

Merge pull request #13 from anivon/update_hoa/Maths_dependency

Change hoa/maths dependency from ~0.1 to <2.0

Fix readme.

Merge pull request #12 from stephpy/patch-1

Fix example issue.

Support php till 7.0 - Adopt atoum 2.0 for unit tests

Merge pull request #10 from shouze/atoum/Adopt2.0

Adopt atoum 2.0 & add php versions to ci matrix.

Embrace new Hoa release cycle

v1.0.3

Use tagged version of hoa.