Merge pull request #34 from paczian/master

updated plants stuff
changes to add 'scaling' to analysis data, made row naming consistant
Merge pull request #35 from teharrison/master

 	changes to add 'scaling' to analysis data, made row naming consistant
fix find_annotations
Merge pull request #36 from teharrison/master

 	fix find_annotations
fix dump bug
Merge pull request #37 from teharrison/master

fix dump bug
fix row / col mixup
Merge pull request #38 from teharrison/master

fix row / col mixup
propagated row_min option to dump function
Merge pull request #39 from teharrison/master

 	propagated row_min option to dump function
scaling now uses column independent sums
Merge pull request #40 from teharrison/master

 	scaling now uses column independent sums
pco created coordinates from R output
added another heirarchy traversal function
Merge pull request #41 from teharrison/master

pco created coordinates from R output
fixed str -> float
Merge pull request #42 from teharrison/master

fixed str -> float
added extra argument
added source option for ontology hierarchy