Version 4.1.2 – 03/01/2016
handle Qq graphics command as separate Q and q commands to fix “Error rendering page Unrecognized Command Qq”
update key version
Version 4.1.1 – 02/11/2016
missing page content. unicode character mapping when cid to gid map is missing.
Version 4.1 – 02/05/2016
make JavaScriptSettings public, read how to turn on Javascript
add bullet to ZapfDingbats font
Version 4.0.4.3 – 11/6/2015
make tile factory per instance instead of static
Version 4.0.4.2 – 09/29/2015
(re)generate widget appearances when needAppearances flag is set
Version 4.0.4.1 – 06/15/2015
fixed drawing and editing callouts on rotated pages
Version 4.0.4 – 06/11/2015
added copy/paste for annotations
added callout annotations
added API for creating rubber stamps with custom appearances
Version 4.0.3 – 03/26/2015
fixed bug where toolbar was getting created twice
Version 4.0.2 – 03/25/2015
add support for images with JBIG2 masks which require resizing
Version 4.0.1 – 02/20/2015
fix for issue related to post script functions in some documents
fix for occasional issue related to text rendering
Version 4.0 – 01/02/2015
various bug fixes and performance improvements
added inverted colors mode
additional view modes (horizontal continuous, horizontal single)
