- Update to 0.17.1:
* Avoided making the cursor busy from a separate thread

- Update to 0.17.0:
Main changes:
* Now, FeatherPad can save as root without a root instance when
the user doesn't have the permission to write. Polkit's
pkexec is used (as a run-time dependency) for gaining the
root privilege.
* Printing is done in a separate thread, so that, if it takes
a long time, other windows of FeatherPad could still be used.
* Workarounds are added for bugs in Qt's default printing.
Qt can't handle dark color schemes and the reverse order
with printing; FeatherPad supports both.
Other changes:
* Made the warning bar more flexible for use with saving to
root as well as printing.
* Guarantee that the session dialog has focus after opening
a session.
* Added LaTex to the recognized syntaxes.
* Added simple support for gvfs' admin.
* Fixes to Perl syntax highlighting.
* Several fixes to various small issues.