Update changes file for several PRs

For PR #6761 - Web page menu items (menu item checkbox's and radio buttons) can now be activated while in browse mode.  Issue #6735
For PR #6866 - Excel sheet name reporting is now translated. Issue #6848
For PR #6884 - Pressing ESC while the configuration profile "Confirm Deletion" prompt is active now dismisses the dialog. Issue #6851
For PR #6895 - Cell border information can now be reported in Microsoft Excel by using `NVDA+f`. Issue #3044
For PR #6860 - Added support for aria-current attributes. Issue #6358

user_docs/en/changes.t2t

@@ -3,6 +3,19 @@
 
 %!includeconf: ../changes.t2tconf
 
+= 2017.2 =
+
+== New Features ==
+- Cell border information can now be reported in Microsoft Excel by using `NVDA+f`. (#3044)
+- Added support for aria-current attributes. (#6358)
+
+
+== Bug Fixes ==
+- Web page menu items (menu item checkbox's and radio buttons) can now be activated while in browse mode. (#6735)
+- Excel sheet name reporting is now translated. (#6848)
+- Pressing ESC while the configuration profile "Confirm Deletion" prompt is active now dismisses the dialog. (#6851)
+
+
 = 2017.1 =
 Highlights of this release include reporting of sections and text columns in Microsoft Word; Support for reading, navigating and annotating books in Kindle for PC; and improved support for Microsoft Edge.