Update version on master branch to 4.4.1 for ongoing development past 4.4 (opensim-org#3229)

Author: aymanhab

CHANGELOG.md

@@ -6,6 +6,10 @@ request related to the change, then we may provide the commit.
 
 This is not a comprehensive list of changes but rather a hand-curated collection of the more notable ones. For a comprehensive history, see the [OpenSim Core GitHub repo](https://github.com/opensim-org/opensim-core).
 
+v4.4.1
+======
+- 
+
 v4.4
 ====
 - Updated ezc3d to version 1.4.6 which better manage the events defined in a c3d file.

CMakeLists.txt

@@ -29,7 +29,7 @@ include(FeatureSummary)
 # ----------------
 set(OPENSIM_MAJOR_VERSION 4)
 set(OPENSIM_MINOR_VERSION 4)
-set(OPENSIM_PATCH_VERSION 0)
+set(OPENSIM_PATCH_VERSION 1)
 
 # Don't include the patch version if it is 0.
 set(PATCH_VERSION_STRING)