Pyseq

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* Some PEP8 and Python 3+ updates.

* Added *unittests* for the whole library (requires python 2.7+).

* The ``format`` parameter is renamed to ``fmt`` in ``uncompress()`` and
``Sequence.format()`` to not to shadow the **Python built-in**.

* Added a method called ``includes()`` to the ``Sequence`` class that does
what the ``contains()`` method was doing in previous versions, that is, it
now checks if the given Item could be contained in that particular Sequence.

* Updated ``Sequence.contains()`` method behavior updated to better match its name,
that is, it now checks if the Item is contained inside the boundaries of the
Sequence.

* The padding characters are now properly interpreted, as shown below::

seq = Sequence([
'file.0001.jpg',
'file.0002.jpg',
'file.0003.jpg',
'file.0006.jpg'
])

print(seq.format('%h%04s-%04e%t'))
will print 'file.0001-0006.jpg'

print(seq.format('%h%4s-%4e%t'))
will print 'file. 1- 6.jpg'

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* Fixed %R in uncompress()

* Fixed minor bug in getSequences() with glob

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* supports sequences of any serializable, sortable items

* fixes bug in lss

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* Added support for wildcards in getSequence source input and in lss

* Added format method to Sequence class for formatted string stdout

* Sequence __str__ method now returns simplified compressed sequence string

* Added SequenceError exception

* Sequence qppend method raises SequenceError if file is non-sequence-member

* Export diff function to get numeric differences between two sequential files

* Alpha version of uncompress func for deserialization of compressed sequence
strings.

* Added additional attributes to Item class: path, frame, head, tail

* Item name attribute is now base name, fixes bug where contains method didn't
work on file paths.

* Moved function 'main' to lss permanently.

* Added --format and --debug options to lss

* Ability to set log level with environment variable $PYSEQ_LOG_LEVEL

* Simplified format directives, e.g. from %(head)s to %h, with support for
padding, e.g. %04l.

* Fixed duplicate sequence index number bug

* Set logging level with PYSEQ_LOG_LEVEL environment variable.

* Added 32 additional test cases.

* Performance improvements.

* Added html docs.

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* ``getSequences`` now takes either a directory path or a Python list of files.

* Added setup.py

* Added lss script