Merge branch 'release/0.9.0' into develop
Improve text in README for alt+| command and shell configuration.
[#16] Piping document with UTF8 characters in causes failure.

Remove the `universal_newline` feature and then encode stdin, and decode stdout.

Note that this is a reversal of 989c136, which does raise the question about why I made that change in the first place. We really need some regression testing. :(
Bump version number.
Update changelog.
Merge branch 'release/0.10.0'