Adding find_track.c
Adding wget
Modifying connect.c
Adding timing.py
Adding interleave.c
Merge branch 'master' of https://github.com/AllenDowney/SoftwareSystems
Adding hw04
Adding lecture08
Merge branch 'master' of https://github.com/AllenDowney/SoftwareSystems
Merge branch 'master' of https://github.com/AllenDowney/SoftwareSystems
completed hw02 find_track assignment