Performance change from https://github.com/simmotech/sharpcompress
Adding test for Zipx file https://github.com/simmotech/sharpcompress
ZipX reader test
Adding code to for a zipheader that has been ignored (currently, Zip64 headers)
zip/gzip skipping now doesn't involve decompression https://github.com/simmotech/sharpcompress
Merge branch 'master' of https://github.com/adamhathcock/sharpcompress

Conflicts:
	.gitignore