change version to v2.1.0-RC3 (#883)

Author: mwestphal

CMakeLists.txt

@@ -32,7 +32,7 @@ include(f3dVersion)
 set(F3D_MAJOR_VERSION 2)
 set(F3D_MINOR_VERSION 1)
 set(F3D_PATCH_VERSION 0)
-set(F3D_PATCH_VERSION_EXTRA RC2)
+set(F3D_PATCH_VERSION_EXTRA RC3)
 set(F3D_VERSION ${F3D_MAJOR_VERSION}.${F3D_MINOR_VERSION}.${F3D_PATCH_VERSION}-${F3D_PATCH_VERSION_EXTRA})
 set(F3D_VERSION_FULL ${F3D_VERSION})
 find_package(Git QUIET)