Polygons, lines and points are using different coordinates' order and more

[matafokka]

Hello, I've got some issues regarding coordinates' order:

1. Polygons are using [lng, lat] format while polylines and points are using [lat, lng] format, which is confusing.
2. Moreover, latitudeFirst() makes longitude first and longitudeFirst() makes latitude first. So these functions has opposed meaning.
3. Lastly, calling one of these functions switches order permanently, so afterwards user need to call the opposed function and remember whether they've "inverted" the order or not.
4. This behavior is not documented.

My explanations may look unclear, so let me illustrate them by the example.

Imagine that I've generated a bunch of polygons and polylines using [lat, lng] format.

That's what I want my code to look like (regarding that there are no issues):

let glifiedPolygons = L.glify.shapes({
	map: map,
	data: polygons
});

let glifiedLines = L.glify.lines({
	map: map,
	data: lines,
	size: 2
});

That's what I expect my code look like regarding the first issue:

let glifiedPolygons = L.glify.latitudeFirst().shapes({
	map: map,
	data: polygons
});

let glifiedLines = L.glify.lines({
	map: map,
	data: lines,
	size: 2
});

That's what I expect my code to look like regarding the second issue:

let glifiedPolygons = L.glify.longitudeFirst().shapes({
	map: map,
	data: polygons
});

let glifiedLines = L.glify.lines({
	map: map,
	data: lines,
	size: 2
});

And that's what my code finally looks like (regarding the third issue):

let glifiedPolygons = L.glify.longitudeFirst().shapes({
	map: map,
	data: polygons
});

let glifiedLines = L.glify.latitudeFirst().lines({
	map: map,
	data: lines,
	size: 2
});

Please, describe this behavior somewhere in README.md and implement a correct behavior in a new version or, if it's not possible to maintain compatibility with the older versions, create a fork that works as expected.

P.S. In general, nice work, mate, awesome library!