Version 1.3
The main change in this version is the new Bytecode panel, which shows the detailed bytecode instructions produced by the compiler and lets you watch processes executing. There are a number of other minor changes and fixes as well.
To play the game on Windows, you'll just need the Libcirc-win-binary-v1.3.zip file. Extract it to a convenient location, and run LibCirc.exe.
koro-xx has built a Mac OS binary of v1.0: https://github.com/koro-xx/liberation-circuit/releases/latest
For other systems - the /bin subdirectory in the repository has the data files etc. that you'll need to run the game. See the readme for compilation instructions.