Merge pull request #34 from eile/master

Low pass filter implementation
Factor matrix initialization improvement

Removed unnecessary initialization of the first factor matrix in the hosvd() and random() methods.
Readded 'decompose' wrapper
Set default CP-ALS iterations to 50
Iterations update
Low pass filter API tweak
Merge branch 'master' of https://github.com/eile/vmmlib

Conflicts:
	include/vmmlib/lowpass_filter.hpp
Merge branch 'master' of https://github.com/VMML/vmmlib
Low pass filter: cache filtered value, implement more convenient accessors