Implement character spacing

[jvanoostrom]

Hello,

This small piece of code allows you to add character spacing to your text. Simply use the setter:
setCSpacing($pValue);
Where the value is given in pts.

Example:

$oText = $currentSlide->createRichTextShape()
$oTextRun = $oText->createTextRun('Text with character spacing.');
$oTextRun->getFont()->setCSpacing(0.5);

[jvanoostrom]

Will this be pushed to dev or master any time soon so I can use it in my projects? :D

[Progi1984]

@jvanoostrom Merged in develop branch.