Bug Fixes
- Allow tags in the svg and mathml namespace to automtically self-close if empty to help work around a bug in Kindlegen that will not seem to accept a closing svg image tag even though image is non-void
- Prevent TextTab from constantly recentering page when focus is lost
- Fix bugs in plugin basename_to_id when used with xpgt files or any unrecognized extensions
- Fix typos in pls mimetype in plugins
- Fix code synchronization issues among 3 places where file extensions are mapped to mimetypes
- Fix plugin readotherfile interface to rebuild the opf on the fly only if it has been modified
- Fix plugin validation issues with integer vs string representations of line number and character offsets
- Fix duplicate filename in multiple directories bug when updating CSS urls
- Fix bug in page-map.xml mimetype when "Add Existing ..." is used
- Fix undefined behaviour shifting signed negative values in 3rdparty libs and fix many warnings
- Fix text vs binary file type recognition in the plugin interface (CSS and js files are text not binary)
- Fix too small toolbar icons on high dpi displays
- Fix bug that caused text highlighting to get lost on some systems when doing a CSS Find & Replace.
- Fix bug in plugin interface basename_to_id to recognize .htm extensions
- Fix bug in epub3 semantic popups to always refect the local name of epub:type setting
- Fix bug where creation on an HTML TOC could overwrite an existing Nav under epub3
- Fix manifest id not starting with alpha character bug

New Features
- Extend validation plugin interface with add_extended_result() method to allow better cursor positioning
- Extend TextTab and Tabs derived by it to position cursor based on offset
- Allow editing of page-map.xml files, xpgt files and other misc xml based files inside Sigil
- Update Windows builds use Python 3.5.2, VS2015
- Update Mac OS X builds and build instructions to use Python-3.5.2
- Remove support for python2.7 only plugins and simply Manage Plugins settings
- Update to Qt 5.6.1-1 with QtWebKit added back for release builds for Windows (VS2015) and Mac OSX
- Update Mac OS X and Linux build instruction documentation for recent changes
- Allow Linux Dictionaries to look up default paths for dictionaries passed in by build cmake settings
- Make the columns in the Manage Plugins table be sortable by the user
- Better detect undefined and non-existing url fragments to prevent issues when splitting or merging files
- Make tooltips for Run Plugin Icons show the name of the selected plugin on hover
- Upgrade from jquery 1.6.2 to version 2.2.4
- Upgrade from jquery.scrollTo 1.4.2 to version 2.1.2
- Upgrade to double sized 48x48 pixel icons for High DPI displays, Special Thanks to PatNY for creating our icons