version now exclusively in causalpy.__version__

Author: drbenvincent

CONTRIBUTING.md

@@ -61,7 +61,7 @@ cd docs
 make html
 ```
 
-Sometimes not all changes are recognised. In that case run:
+Sometimes not all changes are recognised. In that case run this (again from within the `docs` folder):
 
 ```bash
 make clean && make html

pyproject.toml

@@ -11,7 +11,7 @@ py-modules = ['causalpy', 'causalpy.data']
 
 [project]
 name = "CausalPy"
-version = "0.0.9"
+dynamic = ["version"]
 description = "Causal inference for quasi-experiments in Python"
 readme = "README.md"
 license = {file = "LICENSE"}
@@ -39,6 +39,10 @@ dependencies = [
     "xarray>=v2022.11.0",
 ]
 
+# get the version from causalpy.__version__
+[tool.setuptools.dynamic]
+version = {attr = "package.__version__"}
+
 # List additional groups of dependencies here (e.g. development dependencies). Users
 # will be able to install these using the "extras" syntax, for example:
 #