Either fix 5.4 tests or set 5.5 as requirement

[samdark]

See e61daa6

[klimov-paul]

Either fix 5.4 tests or set 5.5 as requirement

I don't get it: do you have any indication that library can not funtion at PHP 5.4 anymore?
Which particular part causing trouble then?

[samdark]

We don't have a proof it can. That's the problem.

[rob006]

See yiisoft/yii2#14973

[klimov-paul]

Resolved by commit 548b503