Add an 'X-Generator' tag. Fixes #12
Rename normalizeHeaders() to normalizePotData() in util.js.
Fix case-sensitive Poedit headers. Fixes #14 #15 #16
Add 'potHeaders' option for declaring custom headers without using the processPot callback. Will eventually use for adding standardized headers for third-party tools like Poedit.
Update date() calls to gmdate() to prevent error messages when date.timezone isn't set in php.ini. Fixes #19
Add tests for potHeaders option and case-sensitive headers.
Update the readme.
Bump to version 0.4.5