Update Changelog and ReadMe

CHANGELOG.txt

@@ -1,6 +1,50 @@
 List of significant changes and bug fixes going back to version 1.1.0
 
 
+Changes in version 2.3.0
+
+Improvements
+
+    * New feature - "Punch and Roll Recording".
+    * Pinned-play-head can now be repositioned by dragging
+    * Play-at-Speed now can be adjusted whilst playing.
+    * Toolbars controlling volume and speed can now be resized for greater 
+      precision
+    * Macros (formerly 'Chains') substantially extended
+        * New Macro palette
+        * Macros can be bound to keyboard keys
+    * New commands
+        * New 'Tools' menu
+        * New 'Scriptables' commands 
+    * Nyquist gains AUD-DO command
+    * Nyquist effects are now translatable and translated
+    * More dialogs have help buttons now
+    * Increased legibility of trackname display
+    * Half-wave option for collapsed tracks
+    * Sliding Stretch
+    * Dialog (option) for entering labels
+
+Bug Fixes
+
+    Over 90 bugs in 2.2.2 fixed, including:
+
+    * Windows: Queen Mary 1.7.1 Vamp plug-ins crash Audacity on opening 
+      Plug-in Manager - bug #1244
+    * Inconsistent behavior when recording with a selection defined - bug #1839
+    * Ctrl + M does not open label for editing - bug #1852
+    * Vertical Zoom in by clicking in the vertical Scale, or context menu, in 
+      waveform views is inconsistent - bug #1810
+    * Deletion of all tracks cannot be undone - bug #1845
+    * Timer Record with a selection present can get a truncated recording with 
+      data loss - bug #1851
+    * Duplicate shortcuts can be created - bug #1786
+    * Labels longer than 260 characters are now supported - bug #1905
+    * Using Spectrogram Settings in TCP or using Preferences causes Audacity 
+      to reset Project Rate to default rate in Quality Preferences - bug #1977
+    * Cut Preview should play all selected/sync-locked tracks, respecting 
+      Mute/Solo during preview - bug #231
+
+
 Changes in version 2.2.2:
 
 Improvements