Drop constraint stuff from TODO.
Start of support for examining functions.
Differentiate between functions based on arguments.
Different between functions by argument counts and variadic states.
Allow for comparison by installed languages.
Make schema examination deterministic.
Differentiate between functions by language.
Differentiate between functions by their definitions.
Differentiate between functions by their volatility.
Differentiate between functions based on other flags.
Polish off function specs.
Start using triggers when examining tables.
Differentiate between triggers by firing conditions.
Finish trigger equivalency.