Add better editing capabilities to the song editor

Registered by Jaakko Sipari

To make the song editor more usable we should at least be able to (familiar from the pattern editor):
- select multiple blocks
- copy/paste
- dragging of selected block/blocks

Blueprint information

Status:
Not started
Approver:
Ivan Hernandez
Priority:
High
Drafter:
Killian EBEL
Direction:
Needs approval
Assignee:
Killian EBEL
Definition:
New
Series goal:
None
Implementation:
Unknown
Milestone target:
None

Sprints

Whiteboard

(?)

Work Items

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