export/plot flows and choice utilities
add options for debug logging
adjust parameters and use the bell-shaped curve
generate travel time under different congestion level
clean up plotting code

"clear functions" let MATLAB update the cache of
the externally generated .m files
plot individual's time use under different traffic conditions
bugfix: gx is the number of persons making activity/travel decisions
reorganize the plotting scripts
change bete automatically in MATLAB
update parameters of the activity utility function
calculating fx for each individual in the composite MDP
remove three currently unrelated files
correct the filename: JointMDPNon(e)linearEqn.run
bugfix: joint activity participation if and only if a1 == a2
specifiy parameters of activity utility function for each individual
export more debug information
move rho to a separate data file
update free travel time
a few minor changes for making figures
a new running script for household flow variables