Merge pull request #191 from elliotchance/release/1.3.3

Release/1.3.3
testPHPUnitDiffsAreShownOnlyIfAvailable
Merge pull request #195 from elliotchance/1.3.4/195-renderissue-getdiff-bug

RenderIssue getDiff() bug
Merge pull request #196 from elliotchance/release/1.3.4

Release/1.3.4
Merge branch 'master' of https://github.com/elliotchance/concise into release/1.4