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What's new in this version:

Improvements:
- The whole chord plays when iterating over notes with left-right arrows
- Support more properties for fingering
- Add more properties for Plugin API
- Optimise New Score Wizard start time and layout calculations

Fixes:
- MuseScore 3.0.4 crashed on startup on macOS:
- Score margins and positioning of related staves were calculated incorrectly
- Spacers worked incorrectly when interacting with page borders
- Measure counting was wrong when setting a custom offset value
- Keyboard navigation in Single Page view worked incorrectly
- MuseScore crashed on finishing work on Windows
- MuseScore crashed when changing time signature in parts
- MuseScore crashed when selecting a bracket in edit mode


Here is a complete list of the issues resolved in this update:

Playback:
-  Play the whole chord when iterating over notes with Left-Right arrows
- Fix tuning offset for Sori and Koron instruments
- Fix the repeats playback in demo score "Unclaimed_Gift.mscx"

Layout and automatic placement:
- Clef doesn't change when adding clef to the first measure of the score
- Elements above top system can cross into margin and off the page
- The last system of a page is one staff height too far from the margin
- Staff spacer down doesn't work at page bottom
- Staff spacer up need to "invade" the top line of the upper staff in order to start inserting space
- Too much space allocated for minTieDistance when tie overlaps noteheads
- setting top staff to small one affects some texts that are attached to the system rather than the staff
- Wiggly line has an incorrect length for some trill line types
- Spacing of lyrics lines too tight after export of parts
- Articulations too far from some beamed notes on drum staves
- Spurious key change after transposition

UI/UX:
- Label translations truncated in some dialog boxes
- Excluding measure from measure count causes bad count; fixes on relayout
- Wrong measure number when starting with a multimeasure rest
- Fretboard diagrams: Offset needs to be renamed and should correspond with the diagram
- Regression: display of beam properties for a selected note
- creating part while element are selected will undesirably set the SELECTED flag for those cloned elements even though the part scores won't have a selection
- File path and name in score properties are unselectable and can't be copied to the clipboard
- Fix tempo text drawing in Timeline widget
- SC4 compressor: RMS spinner not working properly
- Keyboard nav in Single Page view broken
- Buttons in plugin manager too small for their texts by default
- Regression: display of beam properties for a selected note

Commands/Properties:
- Text style style changes not applied to existing chord symbols
- Frame gap in imported score lost on save
- "va" text in 8va disappears after reopening score ("Numbers Only" becomes checked again)
- Rehearsal marker position reset by everything in editstyle.ui
- Ctrl key is ignored when trying to limit barline change to single staff
- Add Placement above/below property for fingering
- Notes not entered in first measure entered into wrong octave

Corruptions and/or loss of data, crashes:
- MuseScore 3.0.4 on macOS is crashing on startup (and 78 more issues and topics)
- Crash when moving beam if first note of beam is in the first measure and other notes of the beam are in the second measure
- Crash after adding text then exiting edit mode with no text
- Removing a text frame causes a second one to appear and leads to crash after new removal
- "MuseScore quit unexpectedly" when closing MuseScore 3.0.[1-4] on macOS with a MIDI device
- Fix crash on closing MuseScore caused by the crash reporter facility
- Exporting to SVGs crashes the editor in some rare cases
- Crash on SVG export if MM rests and boxes are within one system
- Crash with the first note of measure set to beam middle and nothing to beam to
- Crash when changing Time Signature in parts
- Crash when selecting bracket already in edit mode

Plugins:
- adding (some of the) missing objects/properties in the plugin framework

Miscellaneous:
- Tours strings for French shows up untranslated
- "Untitled"/"My First Score" does not respect locale page size
- predefined drumset files (.drm) cannot get loaded
- Optimised opening "New score wizard" by generating templates preview on demand
- [MusicXML import] Misplaced ties when importing .xml files