document upcoming changes for train-2011.12.28 in changelog

ChangeLog

+train-2011.12.28 (in progress):
+  * improve animation during cert/assertion procedures in dialog: #709
+  * user visible error message in dialog when under back breaking load: #738
+  * cleanup and removal of stale deps from package.json
+  * improve mobile formatting: #747
+  * fixes in dialog communication channel: #748
+  * add a waiting screen while crypto is running on slow browsers: #706
+  * don't allow a user to re-add address they already have verified: #732
+  * CSP (content security policy) fixes: #676
+  * doc fixes regarding running browserid under vagrant
+  * doc fixes regarding new dependencies (libgmp for (much) faster crypto)
+  * bcrypt now runs out of process, uses all available cores, allows for app level 503 under extreme load: #694
+  * Fix "cancel" in the forgot password screen when accessed via required email: #754
+  * first time a user visits browserid.org, show a "learn more" message: #384
+  * partial code versioning/cache busting implementation: #226 #687
+  * improved build process - resource minification no longer leaves artifacts all over: #700
+  * clean up whitespace.  meh.  #758
+  * emails now come from "BrowserID@" instead of "noreply@": #756
+  * completely new implementation for cross domain window communication (https://github.com/lloyd/winchan) #764 #766
+  * allow canceling of "use a different email: #765
+  * improve language and UX of required email flow: #608
+  * better, earlier dev errors for required email: #632
+  * new assertion format (smaller by 66%) handled by verifier, to be generated by browserid next train: #507
+  * now you can change your password: #771 #114
+  * load generator improvements: #782
+  * improved PRNG: #789 #735
+
 train-2011.12.08:
   * improve performance of unit tests.  #686
   * IE8 fixes.  #688