Showed the distribution of solution errors

Added a function to show the distribution of solution errors in
cec13_f12 for D=2, M=100, T=1e4.
Increased the number of bins.

The number of bins is increased to 100 from 30.
Automatically determine the value of T

The value of T is automatically determined with the value of M.
Specifically, the formula to determine the value of T is T = 1e6 / M.
Simulated distribution of the results in Issue 11

Added a function to simulate the results in Issue 11 for D=2, M=100, and
T=10000.
Added sample mean and expected mean

Display information of sample mean and expected mean after showing the
histogram of simulated data in simulate_distribution_issue11.m.
Added ellipsoidal function with exponential noise

Added a rotated and shifted ellipsoidal test function with mixed
exponential noises.