Updated HISTORY.rst and bumped version.

Signed-off-by: Daniel Scheffler <danschef@gfz-potsdam.de>

HISTORY.rst

@@ -2,6 +2,12 @@
 History
 =======
 
+0.21.1 (2022-11-15)
+-------------------
+
+* Fixed old references to master branch after renaming to main.
+
+
 0.21.0 (2022-11-15)
 -------------------
 

py_tools_ds/version.py

@@ -22,5 +22,5 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = '0.21.0'
-__versionalias__ = '20221115_01'
+__version__ = '0.21.1'
+__versionalias__ = '20221115_02'