Merge pull request #103 from kendasareking/master

Extend the M matrix to a general n by n
Added continuation characters to make tests run
Merge remote-tracking branch 'upstream/master'
Merge pull request #104 from kendasareking/master

Improved the aesthetics of Bode()
Merge remote-tracking branch 'upstream/master'
Use the gain crossover frequency as the first guess for solving the phase crossover frequency