I think these are done.  Fix for part of #93
Now to look at BitmapEncoder
Fix for #93.  Added SparsePassThroughEncoder
Merge branch 'master' of https://github.com/numenta/htm.java into BitmapEncoder_93
Merge pull request #121 from wilsondy/BitmapEncoder_93

PassThrough and SparsePassThrough Encoders #92 and #93