Update compatibility requirements

v0.4.7

Update minimums required to support move to 2.7

Update compatibility requirements

v0.4.6

version specification of zf 2.5

ZF 2.5 support update

v0.4.5

Composer update

ZF 2.5 support

v0.4.4

version specification of zf 2.5

Update compatibility requirements

Update composer

Update gitignore