Alignparse

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Added
++++++
* ``MutationRenumber`` accepts gap (``-``) and stop codo (``*``) characters.

* Started requring ``black`` formatting

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Added
+++++
* ``InFrameDeletionsToSubs`` class.

* ``simple_mutconsensus`` takes ``None`` as parameter for ``max_sub_diffs`` and ``max_indel_diffs``

* ``simple_mutconsensus`` takes arguments ``min_support`` and ``max_minor_greater_or_equal``

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Fixed
+++++
* Fixed bug in ``add_mut_info_cols`` when index is not unique.

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Added
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* ``merge_dels`` function that merges consecutive deletion strings.

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Fixed
+++++
* ``consensus.simple_mutconsensus`` works with just one grouping column.

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Fixed
+++++
* ``consensus`` module handles negative site numbers.