Ignore certain mutations; add omni_config to readme

README.md

@@ -1,6 +1,12 @@
 # prosper-shared
+
 Shared build files for the Python Prosper libraries
 
 ## prosper_shared.autohooks
 
 Pre-commit hooks for use with `autohooks`.
+
+## prosper_shared.omni_config
+
+Util for defining, parsing, merging, validating, and using configs from various sources, including file-based configs,
+environment variables, and command-line arguments. This will probably be factored out into an independent library.

pyproject.toml

@@ -66,7 +66,9 @@ bump = true
 arguments = '--fix'
 
 [tool.autohooks.plugins.mutmut]
-arguments = '--CI'
+arguments = [
+    "--disable-mutation-types=string,fstring,expr_stmt,annassign,number", '--CI',
+]
 
 [tool.isort]
 profile = "black"