Bumping to 2.11.0
Merge pull request #1194 from github/linguist-version-2.11.0

Bumping to 2.11.0
Counts the number of lines correctly for files with certain multibyte encodings
Makes sure we do not fail if encoding == nil

It looks like it's valid to call this method even if `binary?` is true.
Encoding as 'ASCII-8BIT' should always succeed.