Standardize on "import module" format rather than "from module import foo" format
Remove _poetry stub module since we directly depend on the poetry package now
Fix conflicts between modules and parameters both named 'poetry'
Fixes#92
This creates a large module to sort through, but the hope is that it
avoids the need to constantly hop around without rhyme or reason to
find the piece of logic you're looking for. The module structure is
mapped to functionality rather than an arbitrary concept of reducing
line number.
