Added Change problem.
Added file for testing a hand-written solution program.
Changed cluster_launcher for change problem
Tweaked change.clj for more generations and population.
Merge remote-tracking branch 'thelmuth/change-problem' into change-problem
Updated cluster_launcher.py for better functionality.
cluster_launcher changed for more change experiments
Merge branch 'cluster-launcher-update' into change-problem

Conflicts:
	cluster_launcher.py
Commented out timing of runs.
Added change-minimal, which just uses integer instructions.
Cleaned up Change problem for prime time.
Reverted cluster_launcher to odd problem
Merge remote branch 'thelmuth/change-problem'
thelmuth/cluster-launcher-update, thelmuth/change-problem