*added legacy behavior for key* family of objects where autorepeat is observed...

*added legacy behavior for key* family of objects where autorepeat is observed (just create an object with an optional argument of 1)
*fixed bug where gatom after pressing return should not stay focused
*fixed bug where gatom's number after ctrl+click should not turn selected
*offered ability for image and others to ignore clicks and pass them below (measured by a zero width, only works for single inlet/outlet objects as otherwise their multiple inlets or outlets will be truncated to the same spot)
*reenabled ability for cnv to pass clicks below and reflected this in the official help file (separate previous commit)