Docs: pick release date from versioneer

Also fix the copyright year in Sphinx configuration.

docs/conf.py

@@ -3,6 +3,7 @@
 # pylint: disable=wrong-import-position,invalid-name
 import sys
 import os
+from datetime import datetime
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
@@ -11,6 +12,7 @@
 sys.path.insert(0, os.path.join(os.path.abspath('..'), 'sourcespec'))
 from sourcespec._version import get_versions  # NOQA
 __version__ = get_versions()['version']
+__release_date__ = get_versions()['date']
 
 # -- General configuration ----------------------------------------------------
 
@@ -76,7 +78,7 @@
 
 # General information about the project.
 project = 'SourceSpec'
-copyright = '2013-2024, Claudio Satriano'  # pylint: disable=redefined-builtin
+copyright = '2011-2024, Claudio Satriano'  # pylint: disable=redefined-builtin
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
@@ -87,6 +89,12 @@
 # The short X.Y version.
 version = release.split('-')[0]
 
+# Release date in the format "Month DD, YYYY"
+release_date = datetime.strptime(
+    __release_date__, '%Y-%m-%dT%H:%M:%S%z'
+).strftime('%b %d, %Y')
+rst_epilog = f'\n.. |release date| replace:: {release_date}'
+
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
 # language = None

docs/index.rst

@@ -10,7 +10,7 @@ Earthquake source parameters from P- or S-wave displacement spectra
 
 :Copyright: 2011-2024 Claudio Satriano [email protected]
 :Release: |release|
-:Date:    |today|
+:Date:    |release date|
 
 SourceSpec is a collection of command line tools to compute earthquake source
 parameters (seismic moment, corner frequency, radiated energy, source size,