Add support for rendering moon's

[datryn-ribdun]

Closes #89

Adds support for moon sigils on a 4x4 grid

Still needs testing

[matildepark]

I am not quite sure who is best to review this, as the author isn't at Tlon and are sigils even Tlon's or the Foundation's to handle?

[thelifeandtimes]

@jalehman this would be helpful to get reviewed and merged, is @arthryn ~nocsyx-lassul the one who owns this at Tlon? @vcavallo ~sogrum-savluc would be game to help test.

[arthyn]

@thelifeandtimes we'll need to get this updated with the new version before we can merge

[datryn-ribdun]

merged with master and redid the changes. I made a the translate and scale changes entirely in my head so definitely would appreciate a second set of eyes.
I will try to test later this week when I get some free time. What's the easiest way to try out sigil-js locally? Is there a testing env?

[datryn-ribdun]

nvm, I found the nice preview tool. Sadly my npm install is borked will try to resolve and test soon.

[arthyn]

glad to see this picked up. just giving it a glance I see you mention 16 phoneme length, but isn't that for comets not moons?