[IPLUG] IBitmapMonoText: add character offset - padding between characters
[IPLUG] made IFaderControl SnapToMouse virtual
[IPLUG] added ISwitchPopUpControl and ISwitchFramesControl
[IPLUG] ValDisplay control now shows param label (TODO: make it optional)
[IPLUG/WIN] invalidate entire window after popup menu closes. Nessecary when popup menu causes IControls to be set dirty
[IPLUG] IPlugStandalone::SendSysEx()
Added ability to externally retrieve linked IParam
Merge branch 'next' of https://github.com/AlexHarker/wdl-ol into next