Rotation API

[sashadev-sky]

Fixes #0000 (<=== Add issue number here)

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UPDATES:

=====================

• update eslint to recognize es6
• update jshint to recognize es6
• standardize use of #rotateBy, #getAngle, and #setAngle and expose to API
• specs for #rotateBy, #getAngle, and #setAngle
• general cleaning
• fix lint warnings
• add a rotation option for L.distortableImageOverlay and expose to API
• add test script to package.json
• bump version to "0.13.6"

=====================

[sashadev-sky]

@VladimirMikulic was meaning to push this a while ago when you added the getAngle and setAngle methods, then cleaned up some other things. Please see PR description and lmk if it's good to merge!

[VladimirMikulic]

Wow, great job, the changes work 👍

[sashadev-sky]

@VladimirMikulic thanks for the quick review, i'll merge now!

I made that post related to _calculateProjectiveTransform btw: https://publiclab.org/notes/sashadev-sky/03-28-2020/if-you-don-t-know-about-georectification#.

Would you be interested in adding anything on? I can add you as a co-author if so, I just need your PL username.

[VladimirMikulic]

@sashadev-sky you can just specify my Github profile :)

[sashadev-sky]

@VladimirMikulic i think it unfortunately needs to be a PL account, its that new co-author feature on the website. Do you not have a PL account?

[VladimirMikulic]

No, I don't. Anyway, it doesn't matter :)

[sashadev-sky]

@VladimirMikulic ok np! U should make one tho! Its fun to get involved on there too with coding updates
and SoC proposals.