Release 0.2.2.

* Non-Latin rendering support.  Improvements to Arabic, Urdu, Devanagari,
  Malayalam, Hebrew, Chinese, Korean, and Japanese.  We use the
  `node-icu-bidi` package to properly implement the Unicode Bidirectional
  Algorithm.
* Also accent position improvements in Vietnamese.
* Add --syslog CLI option.

Change-Id: I8195c4e713fa2b307af389c0d3576c887fa24d16
Bump version after release.

Change-Id: I3f1f4fa31a34dbdade9f112368f52646c49e8bb0