1.7.4 Efficiency improvements for import_mothur
1.7.4 Added import_mothur_constaxonomy and import_mothur_shared

Still needs tests, integrate new internal functions with `import_mothur`
1.7.4 rm import_mothur_tree, import_mothur now handles more formats
1.7.5 Added user-specified axis ordering to plot_heatmap()
1.7.5 User-specified axis ordering and edges to plot_heatmap()

NEW FEATURES

	- User-specified axis ordering to plot_heatmap()

	- User-specified axis edges to plot_heatmap()

	- This addresses:
	  [Issue 237](https://github.com/joey711/phyloseq/issues/237)
	  [Issue 230](https://github.com/joey711/phyloseq/issues/230)
1.7.5 User-specified axis ordering and edges to plot_heatmap()

- Added more examples to plot_heatmap documentation
1.7.4 import_mothur support update.

Supports mothur-derived .shared and .cons.taxonomy files
1.7.4 import_mothur support update.
Merge branch 'import_mothur-efficiency' into merge-master
1.7.6 new features for plot_heatmap() and improved import_mothur()

CHANGES IN VERSION 1.7.5
-------------------------

NEW FEATURES

	- User-specified axis ordering to plot_heatmap()

	- User-specified axis edges to plot_heatmap()

	- This addresses:
	  [Issue 237](https://github.com/joey711/phyloseq/issues/237)
	  [Issue 230](https://github.com/joey711/phyloseq/issues/230)

USER-VISIBLE CHANGES

	- New arguments to plot_heatmap():
	  `taxa.order`, `sample.order`, `first.sample`, `first.taxa`

CHANGES IN VERSION 1.7.4
-------------------------

NEW FEATURES

	- import_mothur now handles more formats

	- Added documentation to discourage .group/.list formats
1.7.6 new features for plot_heatmap() and improved
Merge pull request #257 from joey711/merge-master

1.7.6 new features for plot_heatmap() and improved import_mothur()