Typed wires. Need combine gate too.
Add constant levels. Start on layout.
Fix some bugs; validate from cells. Add separated not, which should be more reliable than the somewhat pesky mixed not.
Add initializer_list constructor for InlineVector. Avoid zeroing out the reserved space in the constructor.
Clean up some. Make sure standard cells start at offset 0. Validation should assume standard cell layout (e.g. no input/output walls modeled).
Oops, was missing simpledxf_test.cc. Fixed a bunch of issues with headers (missing include guards) while I'm at it.
Add dashed lines to GraphicsState in SVG parser, and fix some bugs relating to that. Misc other cleanup
Tidy up the wires, add shape B