Increased version on 'develop'
EPUB-239: Removing wrong rectangles while drawing selection.
EPUB-219: Removed hanging when selection range exists but hasn't got bounding client rect
EPUB-219: Removed hanging when selection range exists but hasn't got bounding client rect
Merged in EPUB-219 (pull request #13)

EPUB-219: Removed hanging when selection range exists but hasn't got bounding client rect
EPUB-239: Even better removing the invalid client rectangles generated by WebKit.
EPUB-239: Enabling marker events after tap hold [Bugfix]
EPUB-239: Disabled filtering wrong rectangles on apple devices.
EPUB-239: Enabling marker events after tap hold [Bugfix]
EPUB-239: SelectionDrawer: magic number extracted to constant
EPUB-239: SelectionDrawer: minor syntax improvement.
Merged in EPUB-239

Fixed wrong selection drawing on Webkit-based browsers.
Dist of version 0.4.2
Release 0.4.2

Changes:
 - corrected drawing selection on webkit-based browsers [Bugfix]
 - Removed hanging when selection range exists but hasn't got bounding client rect [Bugfix]
Merge branch 'master' into gh-pages