Add loops

[varkor]

This adds support for loops, as seen below.

Multiple loops are permitted on an object.

This is facilitated by a new "add loop" button that appears on hover.

There is also the option to rotate the loop through 90°. The loop direction can also be reversed.

Resolves #18.

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I imagine there are probably some behaviours I've overlooked in the interaction with loops, so let me know if something doesn't seem natural, or doesn't work as expected.

[varkor]

Note that this depends on yishn/jsx-tikzcd#5 to generate correct TikZ, so this will have to be updated before this is merged.

[yishn]

@varkor I've published a new version of jsx-tikzcd with your changes and updated the dependencies. Can you resolve the conflicts, please?

[varkor]

I've rebased and fixed the conflicts.

[ScyllaHide]

Is this now included in the new release, because I downloaded 0.60 and I can not find it?

[yishn]

This is not merged yet, so it‘s not in the official release yet. I‘m super busy atm and I don’t know when I‘ll have the time to look over this...

[varkor]

@yishn: have you had a chance to look at this more recently?

[yishn]

Thanks for the reminder! I've tested it out and it is lovely. ❤

[varkor]

@yishn: thank you very much, and thank you for developing tikzcd-editor — it's a really helpful and time-saving tool!