v1.3.12 fixed a parsing issue for QIIME-produced .biom files

phyloseq 1.3.12
===========
- Fixed a parsing issue for some QIIME-produced .biom files
  that had leading space characters. Issue further described at
https://github.com/joey711/phyloseq/issues/171
  Fixed such that any number of leading/lagging space characters
  are removed from taxonomic classification entries

- Fixed build issue on some windows machines derived from problem
  with figure files having colons in the filename.
Merge pull request #172 from joey711/fixes

v1.3.12 fixed a parsing issue for QIIME-produced .biom files