-----
- New sets of retention coefficients in :py:mod:`achrom`.
- :py:class:`mass.Composition` now only stores non-zero ints.
- :py:mod:`fasta` now has tools for parsing of FASTA headers.
- File parsers now implement the `context manager protocol
<http://docs.python.org/reference/datamodel.html#with-statement-context-managers>`_.
We recommend using `with` statements to avoid resource leaks.
API changes
...........
- 'pepmass' is now a tuple in the output of :py:func:`mgf.read` (to allow
reading precursor intensities).
- new function :py:func:`fasta.parse` for convenient parsing of FASTA headers.
- :py:data:`fasta.std_parsers` stores parsers for common UniProt header formats.
- new parameter *parser* in :py:func:`fasta.read` allows to apply parsing while
reading a FASTA file.
- `close` parameter removed in all functions that do file I/O. The unified
behavior is: if the parameter is a file object, it won't be closed by the
function. If a file path is given, the file object will be created and closed
inside the corresponding function.