SAD: compound formats are gone
ENH: readers support FileSentinels and open_files is back, baby.
TST: added tests for reader's use of FileSentinel
ENH: writers now understand FileSentinel
DOC: general clean-up and proof-reading of documentation
TST: added tests for writers handling of FileSentinel
ENH: renamed dm format to lsmat, fixes #707
DOC: updated docs to mention FileSentinel
ENH: updated ordres format name to ordination, fixes #709
DOC: updated docs to reflect format name changes
DOC/STY: fixed some sphinx issues and other suggestions based on comments from @ebolyen
STY: fixed length of section header lines
DOC: made changes suggested by @jairideout
Merge pull request #711 from ebolyen/compound-formats-are-dead-long-live-compound-formats

Compound formats are dead long live compound formats
STY/DOC: cleaned up text, formatting
STY: fixed formatting issue
STY: pep8 fix
Merge branch 'master' of github.com:biocore/scikit-bio into issue-708
DOC: added note for clarity
DOC: fixed unclear statement