GenerateCylindrical and GenerateSpherical overlap incorrectly.

[jejacks0n]

You can see from these screen shots that it's not behaving entirely correctly. Notice that the stitching of those two pixels doesn't quite match up with the other edge of the texture. If someone has some insight on this I'll look at fixing it, but I'm sort of unsure where the issue would begin for it to manifest this way.

[ricardojmendez]

Thanks for the bug report, @jejacks0n. I'm not actively using LibNoise.Unity right now, but will keep the issue open in case I have time to review it (or anyone has comments).