fixes#469 doc fix to to_hdf5 and from_hdf5
Two changelog mentions were incorrectly placed
Merge pull request #489 from wasade/changelog_fix

Two changelog mentions were incorrectly placed
Fix documentation typo
Merge pull request #491 from adamrp/issue-490

Fix documentation typo
BUG: pa handles neg now
DOC: changelog mention
Merge branch 'master' of github.com:biocore/biom-format into issue_492
BUG: Table.copy did not retaing table.type

This would cause copies of a table to not be equal when compared using
the __eq__ method.
DOC: Add note to ChangeLog.md

[skip ci]
Merge pull request #494 from ElDeveloper/copy-didnt-retain-table-type

BUG: Table.copy did not retaing table.type
Merge branch 'master' of github.com:biocore/biom-format into issue_492

Conflicts:
	ChangeLog.md
API: default min_count changed to 1
Merge pull request #493 from wasade/issue_492

Issue 492
DOC: added Phinch as a project using biom
Merge pull request #497 from wasade/issue_473

DOC: added Phinch as a project using biom
Solving merge conflicts
self.X_ids -> self._X_ids and addition of def ids(axis)
Remove unused code.

If we ever want to stop "compressing" the filtered table, code is in project
history.
TST: Add another filter test