Modernize packaging (#138)

* Modernize packaging (switch from versioneer to versioningit, only use pyproject.toml)
* switch package name
* add pip install to rtd

.readthedocs.yml

@@ -15,6 +15,11 @@ build:
   tools:
     python: "mambaforge-4.10"
 
+python:
+  install:
+    - method: pip
+      path: .
+
 # Optionally set the version of Python and requirements required to build your docs
 conda:
   environment: ci/environment.yaml

MANIFEST.in

@@ -1,6 +1,3 @@
-include README README.rst INSTALL CHANGELOG COPYING COPYING.LESSER AUTHORS
+include README.rst INSTALL CHANGELOG COPYING COPYING.LESSER AUTHORS
 include setup.py
 
-
-include versioneer.py
-include gridData/_version.py

gridData/__init__.py

@@ -113,6 +113,6 @@
 
 __all__ = ['Grid', 'OpenDX', 'gOpenMol', 'mrc']
 
-from . import _version
-__version__ = _version.get_versions()['version']
+from importlib.metadata import version
+__version__ = version("GridDataFormats")