Major fixes, among them windows file handling

[eyalk11]

Hi, I solved here few errors, some of which I didn't create an issue. curbuf handling was problematic in a way I don't fully remember. I think it threw an error about out of index of buffers. you probably saw it.

fixing issue #43, windows file operation not working and fixing windows 1 fixes windows file handling issue #43. It really solved FS operations in windows. The thing to note is that you do replace \\ with \\\\ before calling vim commands , otherwise \\ becomes \ and it becomes magic.

The silent thing is needed because of errors from time to time. The missing return caused an error as well.

[eyalk11]

You may also want to look at the panel commit I left out , which contains some of my preferences , but these are not strictly errors, so I left them out.