Update this repo and readme to be a permanent stand-alone fork

[ElectricRCAircraftGuy]

It looks like WinTile may be dying after-all: Fmstrat/wintile#168 (comment), and my bug fix requests are no longer accepted there (that issues was immediately closed, and its title changed).

So, let's update this WinTile Reloaded repo to be a permanent, stand-alone fork of WinTile.

Tasks:

1. Update the readme to indicate this fork is meant to be contributed to
2. rebase it onto the latest version of WinTile, so that it gets all of the latest upstream features from WinTile
3. ensure none of the WinTile Reloaded bug fixes break in the rebase, or have their features unexpectedly changed in undesirable ways
   1. especially ensure that this issue of mine is still fixed in WinTile Reloaded; this comment may help: preview area with dock doesn't work properly Fmstrat/wintile#168 (comment)
4. If I get everything working well, open a PR to merge my changes back into WinTile. If they accept, great! Make WinTile Reloaded a dormant repo again. If not, keep this repo alive.

Note: if anything changes, I'd still rather just use the upstream WinTile and see this WinTile Reloaded fork die. But, I at least want the bare-basic functionality that WinTile Reloaded already provides, and provides perfectly, such as window snapping areas as shown in the screenshots here: Fmstrat/wintile#168 (comment).

From my comment:

Ah, that's too bad. I really appreciate your work on WinTile and was really hoping you (or someone) would fix it in WinTile. This makes me sad. :(

WinTile Reloaded is more-usable at the moment, but is a dead project. WinTile is where it's at, and I hate keeping the fork alive just so it can work.

[GrylledCheez]

@ElectricRCAircraftGuy, are you willing to make the shift to WinTile-Beyond? I've made it compatible with G45 and G46. I'm going to be keeping it separate from now on.