add new Options demo page
Bugfix: WalkontableDom.prototype.offset now returns offset relatively to the document also for position: fixed
Bugfix: methods `countVisibleRows` and `countVisibleCols` were broken since version 0.9.0
feature: initial release of Native Scrollbars feature (experimental, don't use yet)
remove redundant file
bugfix: mouse wheel didn't scroll the window when cursor was over Handsontable
bugfix: fix scrolling on border cases when table height was the size of the container
feature: initial release of `observeChanges` option
added new file CONTRIBUTING.md
Handsontable 0.9.2
Merge tag 'v0.9.2' into gh-pages

Handsontable 0.9.2