Adds phpunit 6.4 as dependency + some PSR2 cleanup#1

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aWuttig wants to merge 6 commits intojasny:masterfrom portrino:master

+37-24

Commits on Oct 9, 2017

Commits on Oct 10, 2018

Don't call DomDocument load statically
joe-pritchard
authored

Commits on Dec 19, 2018

dom load returns a boolean, need to new up dom and then call load without catching the ret value
joe-pritchard
committed

Commits on Jan 22, 2019

Merge pull request #1 from joe-pritchard/master
aWuttig
authored