Chance fails on Windows with deep paths

[mitchless]

Chance's temp file generation will fail when using deep paths on Windows. The NTFS path limit is 256 characters.

The affected file is vendor/chance/lib/chance/instance.rb, lines 448:455.

Is there a reason to preserve the full path, or can we hash that at least?

[mitchless]

@ialexi Git lists you as having removed the md5; can I get your input on this? Can we hash the path and leave the file name?

[ialexi]

Hm... I wonder if we could get a little more of the path in there. Perhaps we can use part of the MD5 + the relative path? I can't remember how the code works atm.

Could also switch to Sass importers, and then none of this would be an issue.