🎈 3.5.0

[chapulina]

🎈 Release

Preparation for 3.5.0 release.

Comparison to 3.4.0: ignition-gui3_3.4.0...ign-gui3

Needed by gazebosim/gz-sim#588

Checklist

• Asked team if this is a good time for a release
• There are no changes to be ported from the previous major version
• No PRs targeted at this major version are close to getting in
• Bumped minor for new features, patch for bug fixes
• Updated changelog
• Updated migration guide (as needed)
• Link to PR updating dependency versions in appropriate repository in ignition-release (as needed):

Note to maintainers: Remember to use Squash-Merge

[codecov]

Codecov Report

Merging #188 (9dc3b2f) into ign-gui3 (3df3ad6) will increase coverage by 44.67%.
The diff coverage is 59.42%.

@@              Coverage Diff              @@
##           ign-gui3     #188       +/-   ##
=============================================
+ Coverage     14.55%   59.23%   +44.67%     
=============================================
  Files            13       23       +10     
  Lines          1333     2730     +1397     
=============================================
+ Hits            194     1617     +1423     
+ Misses         1139     1113       -26     

Impacted Files	Coverage Δ
include/ignition/gui/Helpers.hh	100.00% <ø> (+100.00%)	⬆️
include/ignition/gui/Plugin.hh	100.00% <ø> (+100.00%)	⬆️
src/ign.cc	37.83% <ø> (+37.83%)	⬆️
src/plugins/grid_3d/Grid3D.cc	28.57% <0.00%> (ø)
src/plugins/image_display/ImageDisplay.cc	23.27% <ø> (ø)
src/plugins/publisher/Publisher.cc	90.78% <ø> (ø)
src/plugins/scene3d/Scene3D.cc	12.78% <0.00%> (ø)
src/Plugin.cc	57.44% <22.22%> (+57.44%)	⬆️
src/plugins/screenshot/Screenshot.cc	25.71% <25.71%> (ø)
src/plugins/key_publisher/KeyPublisher.cc	56.52% <56.52%> (ø)
... and 28 more

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[jennuine]

LGTM!