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Complete Version history / Release notes / Changelog for Helio

Version 3.3
Added initial support for custom temperaments, the default list includes 22-EDO and 31-EDO; added commands to switch temperament or convert a piece into any other temperament
Added keyboard mapping page for instruments, allowing to overcome the limits of MIDI 1.0 for microtonal music, or just to re-map any key for whatever purposes
Forgive me father, for I have synthed: removed the built-in piano samples to reduce binary size (my OCD appreciates this immensely), and added a simple sine-like synth which works in any n-tone equal temperament out of the box; it sucks, but hopefully it will be improved in future
Added a command to switch to the most visible track/clip in the viewport, hotkey F3
Fixed note previewing for some instruments: now it sends note-off events after a delay
Minor UI tweaks: made animations a but shorter and sharper, fixed several focus issues when deleting tracks, the resizable edge in note components now depends on the note width

Version 3.2
Added tempo dialog with “tap tempo” control, invoked either by clicking at tempo track nodes, or by hitting “Set one tempo” menu item in project->refactor menu or tempo track context menu
Fixed the old and super annoying rows tiling bug in OpenGL mode
Context menus in the sequencer are now only available via long right-click: instant rclick menu often gets in the way when misclicking / trying to switch to another track
Playback: will compute states of all present CC automations at the playhead position and apply them when playback starts, which helps a lot if you use pedal tracks or similar automations
Orchestra pit: if some instrument hasn’t loaded properly (e.g. plugin file missing), then the last valid instrument settings will be preserved in hope that it can be loaded correctly in the next launches; invalid instruments are shown as greyed out in the orchestra pit page, they also can be deleted, or made valid by adding a plugin node
Key signature dialog: right-click on any key will play the key
Lots of UI updates: tidied up the project info page and the dashboard, updated the colours list and the breadcrumbs control

Version 3.1
Added right-click context menus in the sequencer, version control and orchestra pit pages: the menu content is always the same as in the breadcrumbs control tail menu
Added a command to bring up the current instrument’s window, hotkey F4
Fixed some more UI glitches - most notably, focusing the piano roll scope on a track
Minor bugfixes in MIDI recording
Version 3.0
Added initial support for MIDI recording, hotkey F12
Added initial support for looping the playback over the selected scope, hotkey F11
Added quantization commands
Made annotations lengths adjustable
Added timeout for scanning fonts on the first run to avoid the app hanging on some systems
Minor UI updates for a prettier look and less glitching; added the command palette button in the headline and the timeline repeat sign
More tech debt has been paid down, this part of the update will hopefully be invisible
Added some documentation
Version 2.5
This is mostly a bugfix release: addressed some UX inconveniences and fixed a stupid crash
Added hotkeys for tweaking lengths of selected notes; also adding a note with a modifier key inserts a new note in a dragging mode
Made all hotkey-based beat/length-shift actions depend on the current zoom level
Implemented duplicating tracks in an interactive manner
Made all dialogs draggable
Enabled hardened runtime for macOS builds
Version 2.4
Added the command palette aka goto anything, toggled by ~ hotkey: the default mode is used for quick access to commands for the current context, the ‘/’ mode is used for quick access to projects list, ‘@’ mode to go to any timeline event or focus on any clip, and ‘!’ mode to construct chords from the text description (still experimental)
Added an option to display note names for a visual cue, toggled by the default hotkey ‘g’ (for ‘guides’)
Added an option to disable scales highlighting, toggled by the default hotkey ‘h’ (for ‘highlighting’)
Removed some shame from my heart by refactoring ugly bits of serialization code, also removed the legacy serializer which definitely did not spark joy, thus dropped support for v1 file format
Made it possible to control volume ramping amount with mouse wheel in the velocity map
Fixed some issues with switching between system/custom title bar
Fine-tuned the performance and piano roll behaviour
Added notarization for macOS builds
Version 2.3
Added support for aug/dim chords descriptions
Allow switching between custom and native title bar on Windows and Linux
Also display breadcrumbs in the title bar if possible to save some screen space
Added retrograde and melodic inversion to selection refactoring menu
Added shift-drag-to-copy for all timeline events
Go to next/previous anchor now jumps over clips in pattern mode
Reworked midi import, should fix importing controller tracks, key/time signatures and track names
Made plugins search less likely to stuck and cancellable with a click or escape keypress
Version 2.2
Long-overdue implementation of inline velocity map/editor (toggled by V button)
Arpeggiators can use advanced options, like length multiplier, invertion, randomness level (shift/ctrl/atl + arp button)
Refactored instruments managements to fix rare crashes on the orchestra pit page
Fixed shift-drag-to-copy for notes, which was broken even before v2 release
Fixed automation curves interpolation
Some refactorings for lesser memory usage
Version 2.1
Clips now can be muted/soloed
Patterns can be grouped by name/colour/instrument
Notes can be split into triplets/quadruplets/quintuplets/etc
Binary size is much smaller and more optimised overall, due to unity build
Version 2.0
Spent entire 2018 paying off the tech debt of version 1 (or tech mortgage, if you will), which was pretty much of a POC
Changed bundle ids to more consistent ones
Rewritten the backend side API’s from scratch
LOTS of refactorings, performance/stability fixes, etc - hopefully all future updates will be just incremental improvements

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