Updated CODEOWNERS file to try to reflect who the experts are for various code setions

This is my quick and dirty attempt at this effort.

Please feel free to modify as you see fit.

Author: tleonhardt

CODEOWNERS

@@ -12,3 +12,42 @@
 
 # You can also use email addresses if you prefer.
 #docs/*  [email protected]
+
+# cmd2 code
+cmd2/__init__.py        @tleonhardt @kotfu
+cmd2/arg*.py            @anselor
+cmd2/constants.py       @kotfu
+cmd2/parsing.py         @kotfu @kmvanbrunt
+cmd2/pyscript*.py       @anselor
+cmd2/rl_utils.py        @kmvanbrunt
+cmd2/transcript.py      @kotfu
+cmd2/utils.py           @tleonhardt @kotfu @kmvanbrunt
+
+# Sphinx documentation
+docs/*                  @tleonhardt @kotfu
+
+# Examples
+examples/env*.py        @kotfu
+examples/help*.py       @anselor
+examples/tab_au*.py     @anselor
+examples/tab_co*.py     @kmvanbrunt
+
+# Unit Tests
+tests/pyscript/*        @anselor
+tests/transcripts/*     @kotfu
+tests/__init__.py       @kotfu
+tests/conftest.py       @kotfu @tleonhardt
+tests/test_acar*.py     @anselor
+tests/test_argp*.py     @kotfu
+tests/test_auto*.py     @anselor
+tests/test_bash*.py     @anselor @tleonhardt
+tests/test_comp*.py     @kmvanbrunt
+tests/test_pars*.py     @kotfu
+tests/test_pysc*.py     @anselor
+tests/test_tran*.py     @kotfu
+
+# Top-level project stuff
+CONTRIBUTING.md         @tleonhardt @kotfu
+setup.py                @tleonhardt @kotfu
+tasks.py                @kotfu
+