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This fixes some issues where the types were causing different alignment
rules for Windows than we expect elsewhere.

This supercedes !48, and is based upon ZUHONG TAO's work there to include
the necessary changes for alignment fixes.

Fix getting css from pango font description with style and variant

See merge request !47

We can create the proxy without forcing the launch of the peer
process or waiting for signals/properties. Since this wont block
we meet the needs of !46 but without the extra main loop
processing. This is important because it allows
tests/test-file-manager to still work as all the necessary RPC
bytes will be written to the stream before exiting.

Avoid blocking the UI if dzl_file_manage_show is called from the
main thread if there were any issue with dbus.

To my eyes, this looks ugly, as dzl_file_manage_show is a sync
call in three systems (Win32, OSX, and Linux). Ideally, we could
have dzl_file_manage_show and dzl_file_manage_show_sync, or
one async in all systems.

If the API user check error, still it will work for Win32 and
OSX. For Linux, it will be managed by dzl_file_manage_show.

powerpc32: use fallback code for 64 bits __sync primitives

See merge request !44

Fixes #54

This property can be used to track the changes of the titlebar as they
animate in and out. Some effort is made to ensure that changes are only
emitted once and in order, however immediate changes to fullscreen may
result in going from SHOWN to HIDDEN immediately.

Related #38

We need this higher so that we can override libraries like VTE from
application CSS.

Fixes #52

Fixes #51

suggestion: Add secondary icon support

Closes #50

See merge request !42

Fixes: #50

dzl-suggestion-row: Move from box to grid layout

See merge request !40

dzl-column-layout: Improve columns estimation

Closes gnome-builder#1037

See merge request !41

Improve the n_columns calculation in dzl_column_layout_layout() to avoid
overshooting the required width by one count of column_spacing.

Fixes: gnome-builder#1037

When we are transitioning from visible to non-visible, we have a number
of operations in play (animating, then hiding, etc). We need to do more
than just check for mapped before we short-circuit.

Fixes #49

This reverts commit 4fa4a08f.

This isn't need in it's current form for epiphany, so we'll defer until
later to see if we want to follow through on the design.

Analog to common mobile systems select whole text on first press into the
entry. Every following press will just set the text marker position.

This allows the icon to stay aligned to the first text row when using
compact-mode.