Pyexcel

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**Updated**

. `68 <https://github.com/pyexcel/pyexcel/issues/68>`_: regression
save_to_memory() should have returned a stream instance which has been reset
to zero if possible. The exception is sys.stdout, which cannot be reset.
. `74 <https://github.com/pyexcel/pyexcel/issues/74>`_: Not able to handle
decimal.Decimal

**Removed**

. remove get_{{file_type}}_stream functions from pyexcel.Sheet and pyexcel.Book
introduced since 0.4.3.

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**Added**

. '.stream' attribute are attached to `~pyexcel.Sheet` and `~pyexcel.Book` to
get direct access the underneath stream in responding to file type
attributes, such as sheet.xls. it helps provide a custom stream to external
world, for example, Sheet.stream.csv gives a text stream that contains csv
formatted data. Book.stream.xls returns a xls format data in a byte stream.

**Updated**

. Better error reporting when an unknown parameters or unsupported file types
were given to the signature functions.

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**updated**

. pyexcel `pyexcel105 <https://github.com/pyexcel/pyexcel/issues/105>`_,
remove gease from setup_requires, introduced by 0.4.1.
. remove python2.6 test support

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**Updated**

. `pyexcel23 <https://github.com/pyexcel/pyexcel/issues/23>`_, handle
unseekable stream given by http response
. PR `22 <https://github.com/pyexcel/pyexcel-ods/pull/22>`_, hanle white
spaces in a cell.

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**Updated**

. `pyexcel14 <https://github.com/pyexcel/pyexcel/issues/14>`_, close file
handle
. pyexcel-io plugin interface now updated to use `lml
<https://github.com/chfw/lml>`_.

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**Updated**

. `33 <https://github.com/pyexcel/pyexcel-io/issues/33>`_, handle mmap object
differently given as file content. This issue has put in a priority to single
sheet csv over multiple sheets in a single memory stream. The latter format
is pyexcel own creation but is rarely used. In latter case,
multiple_sheet=True should be passed along get_data.
. `34 <https://github.com/pyexcel/pyexcel-io/issues/34>`_, treat mmap object
as a file content.
. `35 <https://github.com/pyexcel/pyexcel-io/issues/35>`_, encoding parameter
take no effect when given along with file content
. use ZIP_DEFALTED to really do the compression