widdowquinn/pyani: v0.2.8

This release implements several changes:

• fixed warnings about deprecated usage of pandas and other syntax
• ANIb now respects the --workers argument (PR #127 from Özcan Esen)
• distance matrices are converted from square to condensed form for linkage analysis
• matplotlib calls use new API ('false', 'off' -> False; 'true', 'on' -> True)
• deprecate legacy BLAST testing: ANIblastall commands are no longer supported
• update concordance tests (issue #105)
• extend test suites (issue #104)
• modify ANIm concordance test to accommodate new command structure
• add delta-filter wrapper for compatibility with SGE/OGE schedulers