document changes in 2011.12.01

ChangeLog

+train-2011.12.01:
+  * BrowserID now requires NodeJS >= 0.6.2
+  * extensive work on load generation tool: #504
+  * modularize front-end, remove deps on stealjs and JSMVC: #609, #625, #634
+  * front-end refactoring: #578, #611, #608, #650, #654, #655
+  * regression fix: account consolidation possible without explicit canceling: #607 #612
+  * make it possible to gracefully update domain key at any time: #599
+  * domain key now uses RSA-2048: #600
+  * optimize (and combine) frontend resources (vepbundle): #606
+  * many rpm/packaging updates: #617, #656
+  * timestamps on all log entries: #541
+  * IE8 fixes: #615
+  * unit test fixes: #557 (revisited), #629, #657
+  * update_password WSAPI added: #560, #114
+  * verifier improvements and unit tests: #467, #598, #605, #643, #642, #645, #646, 
+  * node-mysql driver update - improved for prod env  #648
+  * include a link to support.mozilla.com off of browserid.org - #533
+  * added command line tool to create and account: #603
+  * added command line tool to bcrypt a password: #651
+  * fix button heights in firefox on browserid.org: #658
+  * make sure logout is called only once in dialog: #666, #630
+  * make 'use another email address' more discoverable: #623
+  * use statsd for statistics reporting: #662
+  * heartbeat checks are now shallow, only indicating presence of a server and basic health: #566
+  * keysigner and verifier now saturate multiple cores via 'compute-cluster' module: #213
+  * fix spurious console error messages on sites that use postMessage and include.js: #534
+  * refine language in verification email: #672
+
 train-2011.11.17:
   * frontend code restructuring and refactoring
   * process breakup complete (dbwriter, keysigner, browserid, and verifier): #460