- Various fixes ported from the development branch.
- Closed bugs and merge requests:
* gnome-shell crashes on exit in js::gc::Cell::storeBuffer [#472, !834, Daniel
van Vugt]
* Memory leak with GError [#36, !837, Marco Trevisan]
* GVariant return values leaked [#499, !837, Marco Trevisan]
* GBytes's are leaked when passed as-is to a function [#539, !837, Marco
Trevisan]
* Transformated GValues are leaking temporary instances [#540, !837, Marco
Trevisan]
* GHash value infos are leaked [#541, !837, Marco Trevisan]
* "flat" arrays of GObject's are leaked [#542, !837, Marco Trevisan]
* Gjs console leaks invalid option errors [#544, !837, Marco Trevisan]
* gjs can't print null [#545, !841, Angelo Verlain]
