Shhhh I was really hoping I wouldn't have to name a release 4.20, but here we are! Mostly backports and fixing glaring issues since complx-tools isn't ready yet.
pyLC3
Fix #143 which caused mayhem, a hole that made code act different in test vs simulator. It is now an error to call any fill/set functions before the code is loaded.
Replay strings can now be compressed.
liblc3
Fix plugins OnWrite being called multiple times if it was mapped to any address >= xFE00