Add Release Notes for v1.12

WHATSNEW.md

+osTicket v1.12
+==============
+### Enhancements
+* issue: Upgrader Wrong Guide Link (#4739)
+* iframe: Allow Multiple iFrame Domains (#4781)
+* variable: Complete Thread ASC or DESC (#4737)
+* issue: Strip Emoticons (#4523)
+* feature: ACL (Access Control List) (#4841)
+
+### Improvements
+* issue: Maxfilesize Comma Crash (#4340)
+* issue: System Ban List (#4706)
+* queues: Fix compatibility issues with newer jQuery (#4698)
+* filedrop: Fix file drag and drop (#4719)
+* issue: PHP 7.2 Plugin Delete (#4722)
+* issue: Local Avatar Annotation (#4721)
+* Selected Navigation Item (#4724)
+* Issue: Attachments on Information Fields (#4730)
+* issue: No Save Button On Quicknotes (#4706)
+* Issue: Duplicate Tickets in Closed Queue (#4736)
+* issue: APC CLI (#4731)
+* users: Fix seaching of users (#4741)
+* issue: Custom Column Org Link (#4755)
+* issue: Internal Note Ignored (#4745)
+* issue: PHP 7.2 Ticket Status (#4758)
+* issue: Canned Response Variables (#4759)
+* issue: FAQ Search Results (#4771)
+* issue: FAQ Return Errors (#4772)
+* Queue Columns (#4785)
+* issue: Duplicate Form Titles (#4788)
+* Issue: Exporting Tickets (#4790)
+* issue: Organizations Users Sort (#4806)
+* issue: Multilingual FAQ Category w/ Parent (#4812)
+* issue: Task Print PDF (#4814)
+* Issue: MPDF Export PHP < 7.0 (#4815)
+* Quick Filter Fixes: (#4728)
+* Assignment Restriction Issue (#4744)
+* Issue: Saving Checkbox Values (#4798)
+* Issue: Choosing Fields to Export (#4797)
+* oops: Thread Variable Fatal Error (#4820)
+* oops: Emojis Strip Korean (#4823)
+* issue: iFrame On Install (#4824)
+* Issue: Ticket Export Headers (#4796)
+* issue: Organization Ticket Export No Filename (#4825)
+* MPDF Issues (#4827)
+* issue: sendAccessLink On NULL (#4828)
+* issue: sendAccessLink On NULL v1.11 (#4829)
+* Update README.md (eccc57a, e5f4180)
+* issue: iFrame Single Quotes (#4844)
+* issue: Choice Validation Accept Punctuation (#4847)
+* issue: ACL Move To Inc Files (#4848)
+* Issues since v1.11 release (#4850)
+* PJAX: Increase default timeout (#4855)
+* Mime Decode - Encoded char (#4851)
+* MPDF Tasks (#4856)
+* issue: .eml/.msg Attachments (#4857)
+* issue: Task EstDueDate (#4862)
+* Bug fixes and enhancements for v1.11 (#4863)
+* Mailer: Allow for ability to pass -f option as from_address (#4864)
+* Ticket Link: Always return a link (#4865)
+* Minor Fixes (e628373)
+
+### Performance and Security
+* xss: XSS To LFI Vulnerability (#4869)
+* jquery: Update Again (#4858)
+
+
 osTicket v1.10.6
 ================
 ### Enhancements