Intermediate revision -- further refactoring of Yale. Almost working
ordered iterator.
fix storage mark functions to actually mark ruby objects in object dtype arrays.  Fixes #126.
Attempt at row iterator
fixed additional GC marking problems with nmatrix objects of dtype object
change back nm_alloc mark to be NULL
only memset new dense storage for dtype object
remove vestigal recursive gc marking of dense storage src
Almost got this damn thing working.
Refactoring incomplete, but stuff which had been previously implemented
does work.
Merge branch 'master' of github.com:SciRuby/nmatrix
Fix pending in math_spec for getri rational
Fixed README link
Project clean-up
Fix verbatim text
Updated contributing
Fixes #127
Fixed some bugs travisci found
More travisci compile problems
changed map functions in dense storage to use the rb_gc_(un)register functions to protect storage during initialization instead of the memset to zero hack
revert dense storage creation documentation change