* fix load order bug
* remove comment about bug
	modified:   src/matlistcommon.jl
restore matrix tests
modified:   src/matlistcommon.jl
* added zeros() which returns a Matrix (not a permutation)
* add contructor from plain Matrix
check
* fixed sparsetocycles bug
* adding kron
fixed bug in compose for Dicts (PermSparse)
and added test
	modified:   test/sparse_test.jl
fixed bug in cyclelengths on PermSparse by sorting hash keys
 (in PermPlain)