Major update for patch-seq taxonomies

[jeremymiller]

Updates: 1) Allow for precalculated dendrogram in the taxonomy 2) Move patchseqQC variables from file to Anndata object 3) Create a new example for generating and mapping patch-seq to Hodge et al MTG taxonomy 4) Allow taxonomyDir input to be anndata file directly 5) Error correction in addDendrogramMarkers (and other functions) 6) Auto-correct '\' --> '/' for different platforms in file paths to allow compatibility with windows and unix

[jeremymiller]

For some reason I can't merge this directly. @UCDNJJ , can you please review and merge?

[jeremymiller]

Updates:

1. Allow for precalculated dendrogram in the taxonomy
2. Move patchseqQC variables from file to Anndata object
3. Create a new example for generating and mapping patch-seq to Hodge et al MTG taxonomy
4. Allow taxonomyDir input to be anndata file directly
5. Error correction in addDendrogramMarkers (and other functions)
6. Auto-correct '' --> '/' for different platforms in file paths to allow compatibility with windows and unix