Build: Prepare 2.9.3 release, including authors and history update

Author: trentmwillis

AUTHORS.txt

@@ -161,3 +161,11 @@ Robert Jackson <me@rwjblue.com>
 jelhan <jelhan@users.noreply.github.com>
 5j9 <5j9@users.noreply.github.com>
 Steve Calvert <steve.calvert@gmail.com>
+Stephen Niedzielski <stephen@niedzielski.com>
+शैलेश कळमकर (Shailesh Kalamkar) <shailesh.kalamkar@gmail.com>
+Martin Feckie <mfeckie@gmail.com>
+SparshithNRai <nairbali@usc.edu>
+Gerald Haagsma <haagsmag@gmail.com>
+Adam Byrne <misterbyrne@gmail.com>
+XhmikosR <xhmikosr@gmail.com>
+step2yeung <syeung@linkedin.com>

History.md

@@ -1,3 +1,18 @@
+2.9.3 / 2019-10-08
+==================
+
+  * Docs: Rename "Main assertions" to "Main Methods" and match casing of other pages
+  * Docs: Update Gemfile.lock
+  * Docs: Repair url <https://api.qunitjs.com/QUnit.log/> with redirect
+  * Core: Reset testTimeout on assert.timeout if config.timeout has already been set
+  * Core: Defer getting the test source until we need it
+  * HTML Reporter: Display progress and runtime while test suite is executing (#1398)
+  * CLI: Ignore those folders mentioned in the gitignore
+  * CSS: Tweak CSS to address dropdown and button styles
+  * Docs: Update Travis badge
+  * Docs: deepEqual() checks strict inherited equality
+  * Docs: Add a few missing steps to release docs
+
 2.9.2 / 2019-02-21
 ==================