Support git-icdiff on paths with spaces. Fixes jeffkaufman#48.

Don't abort processing when encountering a binary file. Fixes jeffkau…

…fman#38.  Also fixes test.sh to improve regolding.

Don't treat files with identical (mode, size, mtime) as equal.

Add tests.

fix --recursive

Stop setting LESS_IS_MORE with git-icdiff, fixing jeffkaufman#33.

Add --output-encoding flag and default to utf8

Unbreak --recursive

Allow specifying the encoding with --encoding, support fullwidth char…

…s in python2.

document new options and svn support