Extract delete command #420
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Refactor: extract delete and deletion-related commands (such as change) from the insert function into a new function named
deleteSelectionsContext:
For #376 I wanted to modify how deletion behaves slightly. It took me a while to understand how deletion actually works in dance (basically, you're pasting an empty string into your selection) and thought that having a separate command would make things more understandable.
Testing:
Note that all tests still pass without modifying them.