Merge pull request #210 from mleotta/dev/update-release-notes

minor edits to v0.9.0 release notes

doc/rel_notes/0.9.0.txt

@@ -2,11 +2,11 @@ MAP-Tk v0.9.0 Release Notes
 ==========================
 
 This is a minor release of MAP-Tk that provides both new functionality and
-fixes over the previous v0.8.0 release.  However, MAP-Tk is still considered
+fixes over the previous v0.8.1 release.  However, MAP-Tk is still considered
 pre-release software and subject to significant API changes.
 
 
-Updates since v0.8.0
+Updates since v0.8.1
 ---------------------------------
 
 MAP-Tk Library
@@ -45,7 +45,8 @@ Core Plugin
 
 OpenCV Plugin
 
- * Added CMake support for handing and marking the use of OpenCV version >= 3.
+ * Added support for OpenCV version >= 3.0 while maintaining support for
+   OpenCV >= 2.4.6.  We may drop support for OpenCV 2.X in a future release.
 
  * Overhauled OpenCV algorithm introspection structure. Versions 3.x took away
    the previous ability to introspect algorithm types and parameters,
@@ -87,9 +88,9 @@ Visualization Application
 
  * The GUI now accepts a list of files to be opened on the command line.
 
- * Added a depth map view and a depth map visualisation in the world view. The
+ * Added a depth map view and a depth map visualization in the world view. The
    depth maps can be thresholded directly in the world view, and the depth map
-   view offers several visualisation modes such as depths, uniqueness ratios or
+   view offers several visualization modes such as depths, uniqueness ratios or
    best cost values. Depth maps can be loaded by initializing the parameter
    "depthmaps_images_file" with the path to the depth maps (*.vti files) list in
    the configuration file.
@@ -119,7 +120,7 @@ Default Configuration
  * Switched default feature descriptors to use non-upright SURF.
 
 
-Fixes since v0.8.0
+Fixes since v0.8.1
 -------------------------------
 
 Build System