tag v0.4

Added

• New tag.select.merge function to efficiently merge sorted feature streams (see #68).
• New tag.locus module for efficient parsing locus coordinates from multiple annotation streams (see #71).
• New experimental tag.bae module for evaluating bacterial annotation (see #73, #76).

Changed

• Minor updates to compensate for a couple years' worth of neglect (see #64).
• Refactored GFF3Reader to better support processing of unsorted GFF3 data (see #65).
• Implemented finer control of how and when output separator directives (###) are printed to GFF3 output (see #68, #75).
• Reorganized test suite code and data (see #70).
• Refactored the Feature and Score APIs with more sane default and static constructors (see #74).

Fixed

• The GFF3Writer class now behaves as expected when .retainids is set to True (see #79).