release: apply python-pptx-extended fork metadata

Cherry-picked from release/v1.1.0 (commit 9a3ab2a) onto the customXml
feature branch. Brings the PyPI fork-prep changes that were prepared on a
sibling branch into the line that's actually shipping:

- pyproject.toml: name -> python-pptx-extended; maintainer added;
  description acknowledges the fork's added features (now including
  customXml); URLs point at MHoroszowski/python-pptx with an Upstream
  link to scanny/python-pptx.
- README.rst: Fork notice section explaining the relationship to
  upstream and listing the fork's added capabilities (shadows, bullets,
  table borders, line caps/joins, line-end types, and customXml
  support).
- HISTORY.rst: 1.1.0 (2026-05-01) entry recording the fork
  establishment, retained alongside the 1.2.0 (2026-05-05) entry that
  records the customXml feature.

Author: MHoroszowski

HISTORY.rst

@@ -3,11 +3,10 @@
 Release History
 ---------------
 
-1.2.0 (2026-05-05) — fork release
-+++++++++++++++++++++++++++++++++
+1.2.0 (2026-05-05)
+++++++++++++++++++
 
-This is a feature release for the ``python-pptx-extended`` fork. Adds
-first-class support for OOXML customXml — the mechanism Office.js,
+Adds first-class support for OOXML customXml — the mechanism Office.js,
 SharePoint, and VSTO add-ins use to embed structured application data in
 ``.pptx`` files. See ``docs/user/custom-xml.rst`` for the user guide and
 ``docs/dev/analysis/customxml.rst`` for the OOXML analysis.
@@ -30,6 +29,16 @@ SharePoint, and VSTO add-ins use to embed structured application data in
   containing customXml parts authored by SharePoint, Office.js, or VSTO load
   and save without losing their content.
 
+1.1.0 (2026-05-01)
+++++++++++++++++++
+
+- Fork of python-pptx 1.0.2 published as ``python-pptx-extended``.
+- feature: full shadow effect API on ``ShadowFormat``
+- feature: bullet and numbered list paragraph formatting
+- feature: per-edge table cell borders
+- feature: ``cap_style`` and ``join_style`` properties on ``LineFormat``
+- feature: line-end shape types
+
 1.0.2 (2024-08-07)
 ++++++++++++++++++
 

README.rst

@@ -1,3 +1,31 @@
+Fork notice
+-----------
+
+This distribution, ``python-pptx-extended``, is a fork of
+`scanny/python-pptx`_ at upstream version 1.0.2. The import name is unchanged
+(``import pptx``), so existing user code continues to work. The fork adds the
+following features on top of upstream:
+
+- Full shadow effect API on ``ShadowFormat`` (outer/inner/preset shadows).
+- Bullet and numbered list formatting on paragraphs.
+- Per-edge border styling for table cells.
+- ``cap_style`` and ``join_style`` properties on ``LineFormat``.
+- Line-end shape types (arrow / triangle / oval / etc.).
+- OOXML customXml support — ``Presentation.custom_properties`` (Mapping over
+  custom document properties) and ``Presentation.custom_xml_parts``
+  (Sequence over customXml data parts), supporting both
+  presentation-scoped (Office.js default) and package-scoped (VSTO /
+  SharePoint) topologies.
+
+Because the import package name (``pptx``) is shared with the upstream
+distribution, ``python-pptx`` and ``python-pptx-extended`` cannot be installed
+into the same environment — install one or the other.
+
+.. _`scanny/python-pptx`: https://github.com/scanny/python-pptx
+
+About python-pptx
+-----------------
+
 *python-pptx* is a Python library for creating, reading, and updating PowerPoint (.pptx)
 files.
 

pyproject.toml

@@ -3,8 +3,9 @@ requires = ["setuptools>=61.0.0"]
 build-backend = "setuptools.build_meta"
 
 [project]
-name = "python-pptx"
+name = "python-pptx-extended"
 authors = [{name = "Steve Canny", email = "stcanny@gmail.com"}]
+maintainers = [{name = "Matthew Horoszowski", email = "matthew.horoszowski@gmail.com"}]
 classifiers = [
     "Development Status :: 5 - Production/Stable",
     "Environment :: Console",
@@ -27,18 +28,19 @@ dependencies = [
     "lxml>=3.1.0",
     "typing_extensions>=4.9.0",
 ]
-description = "Create, read, and update PowerPoint 2007+ (.pptx) files."
+description = "Fork of python-pptx with additional formatting features (shadows, bullets, table borders, line caps/joins, line end types) and OOXML customXml support (custom doc properties, customXml data parts)."
 dynamic = ["version"]
 keywords = ["powerpoint", "ppt", "pptx", "openxml", "office"]
 license = { text = "MIT" }
 readme = "README.rst"
 requires-python = ">=3.8"
 
 [project.urls]
-Changelog = "https://github.com/scanny/python-pptx/blob/master/HISTORY.rst"
+Changelog = "https://github.com/MHoroszowski/python-pptx/blob/master/HISTORY.rst"
 Documentation = "https://python-pptx.readthedocs.io/en/latest/"
-Homepage = "https://github.com/scanny/python-pptx"
-Repository = "https://github.com/scanny/python-pptx"
+Homepage = "https://github.com/MHoroszowski/python-pptx"
+Repository = "https://github.com/MHoroszowski/python-pptx"
+Upstream = "https://github.com/scanny/python-pptx"
 
 [tool.black]
 line-length = 100