build(pyproject): Update keywords, formatting

Author: tony

pyproject.toml

@@ -7,8 +7,9 @@ version = "0.4.4"
 description = "vcs abstraction layer"
 license = "MIT"
 authors = ["Tony Narlock <tony@git-pull.com>"]
-keywords = ["libvcs"]
-classifiers = ["Development Status :: 4 - Beta",
+keywords = ["libvcs", "git", "mercurial", "hg", "svn"]
+classifiers = [
+  "Development Status :: 4 - Beta",
   "License :: OSI Approved :: MIT License",
   "Environment :: Web Environment",
   "Intended Audience :: Developers",