Type checks on style writers
Minor fix. If conversion factor from pointToPixel is 1.333333, then the
conversion factor for PixelTopoint should be 0.75
Amended the corresponding test
Added ListItemRun Element
Merge branch 'Fixed-conversion' of github.com:basjan/PHPWord into #234-#235-basjan
Merge branch 'ListItemRun' of github.com:basjan/PHPWord into #234-#235-basjan
Update changelog
Merge branch '#234-#235-basjan' into develop