Additional matrix functionality for R including: (1) wrappers for
the base matrix function that allow matrices to be created from character
strings and lists (the former is especially useful for creating block
matrices), (2) better printing of large matrices via the generic "pretty"
print function, and (3) a number of convenience functions for users more
familiar with other scientific languages like 'Julia', 'Matlab'/'Octave', or
'Python'+'NumPy'.