Phpunit suite

[cdekok]

Q	A
Branch	master for features and deprecations
New feature?	yes
BC breaks?	no
Deprecations?	no
Documented?	yes
Fixed tickets	#297

Add a testsuite option to the phpunit task

[cdekok]

it looks like appveyor is failing on something called Chocolatey seems to be their problem.

[veewee]

Thanks for the PR! Yes, I've also noticed it. I'll try to take a look at it at the end of the week. The code looks good, one small remark: why not use testsuite as property name? This way it has the same naming as in phpunit.

[cdekok]

You are right there was not really a reason only i liked it better with group ;) but better to keep the same name convention as the phpunit parameters