PHP methods should not contain too much logic

[JBlond]

100 lines for Diff_Renderer_Html_SideBySide::render() in lib/Diff/Renderer/Html/SideBySide.php, line 56
80 lines for Diff_Renderer_Html_Inline::render() in lib/Diff/Renderer/Html/Inline.php, line 56
54 lines for Diff_Renderer_Text_Context::render() in lib/Diff/Renderer/Text/Context.php, line 65
53 lines for Diff_Renderer_Html_Array::render() in lib/Diff/Renderer/Html/Array.php, line 115

[Creris]

Hey,

I would like to do try to tackle this tomorrow morning.

[JBlond]

Thanks a lot for your PR #4