Last bit for release 2.12.1

- fixing pypi manifest for CMake.
- updating numpy dependecy for pip, numpy>=1.22.1.
- incrementing minor release number.

MANIFEST.in

@@ -4,4 +4,4 @@ recursive-include underworld *cpp
 recursive-include underworld *h
 recursive-include underworld *hpp
 recursive-include underworld *py
-recursive-include underworld SCon*
+recursive-include underworld CMakeLists*

setup.py

@@ -264,7 +264,7 @@ def extend_cmake_prefix_path(path: str) -> None:
 metadata = {
     'provides' : ['underworld'],
     'zip_safe' : False,
-    'install_requires' : ['numpy','mpi4py>=1.2.2', 'h5py', 'pint']
+    'install_requires' : ['numpy>=1.22.1','mpi4py>=1.2.2', 'h5py', 'pint']
 }
 classifiers = """
 Development Status :: 5 - Production/Stable

underworld/_version.py

@@ -1 +1 @@
-__version__ = "2.12.0b"
+__version__ = "2.12.1b"