Drag and Drop marker
update ex.fm example
drag and drop markers
#184 use average between max and min values for peaks instead of max
draggable markers
Merge pull request #183 from pitrackster/ddmarkers

Drag and Drop marker
#183 code style
bumb version
New functions: seekAndCenter, toggleScroll. Implemented regions. Marks generate events.

Fixed noise while seeking.

Handlers are now handler DOM element.