Merge pull request mdshw5#158 from Maarten-vd-Sande/master

implement Sequence.__eq__

Merge pull request mdshw5#156 from Maarten-vd-Sande/master

Fasta more dict-like behaviour

Merge pull request mdshw5#155 from prihoda/master

Support zero-length sequences, fixes mdshw5#93. Release new version 0.5.6 to PyPI.

remove python 3.3 and 2.6 from testing

bump version which fixes mdshw5#145

Bump for release

Allow biopython install failure

Add support for carriage returns. Fixes mdshw5#141

Bump version for release

Move buffer redefinition to module scope