Added retirement notice

MANIFEST.in

@@ -1,3 +1,4 @@
+include Makefile CONTRIBUTING.md
 recursive-include example *
 recursive-include test *
 recursive-include docs *

README.rst

@@ -33,6 +33,14 @@ SLY is a modern library for performing lexing and parsing. It
 implements the LALR(1) parsing algorithm, commonly used for
 parsing and compiling various programming languages. 
 
+Important Notice : October 11, 2022
+-----------------------------------
+I'm officially retiring the SLY project.  There will be no further
+releases.  Should you choose to still use it, the GitHub repo will
+remain alive--feel free to vendor the code and report bugs as you see
+fit.  I'd like to thank everyone who contributed to the
+project. -- Dave
+
 Requirements
 ------------
 

setup.cfg

@@ -15,24 +15,4 @@ classifiers =
 package_dir =
     =src
 
-packages = find:
-
-[options.packages.find]
-where = src
-
-[tool.pytest]
-testpaths = test
-
-[coverage:run]
-branch = True
-
-[tox:tox]
-isolated_build = True
-envlist = py311,py310,py39
-
-[testenv]
-deps =
-    pytest
-    pytest-cov
-
-commands = pytest {posargs}
+packages = sly