Fix build on Windows.
Fix typo in comment.
Emulate Ethernet SMI.

Currently only the link status bit is returned and it is hardcoded to always
up.
Add links to dependencies
Link to axe_superproject
Remove trailing slash on URLs
Remove unused PortSplitter class.
Introduce a PortConnectionManager class via which all port connections are made.
Introduce separate derived classes for each property type.
Allow ports arguments to specify either a slice or one bit of a port.
Slices are specified with an inclusive lower bound and an exclusive upper
bound, for example:

PORT_8A[3] - bit 3 of port 8A
PORT_8A[1:5] - bits 1-4 of port 8A
Add support for connecting subsets of pins between two ports.
Add LCD Screen peripheral.
Fix RUN line in test
Fix parsing of ports arguments containing cores.
Remove cruft.
Fix non-virtual destructor warning.
Update PortCombiner and PortSplitter to handle clock signals correctly.
Add a PortSignalTracker class to keep track of the last signal change.

Use this to simplify various peripherals.
Don't ask for a specific bits per pixel when setting the video mode.
Update timing based the data sheet.