Fix change log conflict

CHANGES.rst

@@ -3,21 +3,26 @@
 
 New Features
 ------------
+
 - Stretch bounds tool now enables dynamic adjustment of spline knots. [#2545, #2623]
 
 - Stretch histogram shows a spinner when the histogram data is updating. [#2644]
 
 - Spectrum viewer bounds can now be set through the Plot Options UI. [#2604]
 
+- Opacity for spatial subsets is now adjustable from within Plot Options. [#2663]
+
 Cubeviz
 ^^^^^^^
 
-- Calculated moments can now be output in velocity units. [#2584, #2588]
+- Calculated moments can now be output in velocity units. [#2584, #2588, #2665]
 
 - Added functionality to Collapse and Spectral Extraction plugins to save results to FITS file. [#2586]
 
 - Moment map plugin now supports linear per-spaxel continuum subtraction. [#2587]
 
+- Single-pixel subset tool now shows spectrum-at-spaxel on hover. [#2647]
+
 Imviz
 ^^^^^
 
@@ -98,6 +103,7 @@ Bug Fixes
 
 Cubeviz
 ^^^^^^^
+
 - Fixes Spectral Extraction's assumptions of one data per viewer, and flux data only in
   flux-viewer/uncertainty data only in uncert-viewer. [#2646]