bumped version to 1.11.2.1.

updated tests to reflect recent changes.

bugfix: applied the patch for nginx security advisory (CVE-2016-4450).

also bumped version to 1.9.7.5.

release 1.9.7.4.

bumped version to 1.9.7.3.

fixed the commands for Mac OS X (especially for El Capitan.

bumped version to 1.9.7.1.

added a .gitattributes file to correct GitHub's language tag.

bumped version to 1.9.3.1.

bumped version to 1.9.3.1rc1.