Pneumatic

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* Improve command-line message content and formatting.
* Confirm Python 3.6 and 3.7 support.
* Expand number of unsupported filetypes to exclude from import list.
* Improve CSV output file name formatting.
* Documentation edits and updates.

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* Delete SQLite database if, upon program exit, it contains no records. (`14 <https://github.com/anthonydb/pneumatic/issues/14>`_)
* Add some color, improve readability in console output. (`18 <https://github.com/anthonydb/pneumatic/issues/18>`_)
* Add colorama dependency for printing ANSI escape code colors in Windows.

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* Provide ``User-Agent`` and ``From`` HTTP header fields.
* Correct issue where ``force_ocr`` and ``secure`` parameters were not being set default to ``false`` in the Ruby way. (`17 <https://github.com/anthonydb/pneumatic/issues/17>`_)
* Handle 50X errors from the API (which do not return JSON). (`15 <https://github.com/anthonydb/pneumatic/issues/15>`_, thank you, `Tom Meagher <https://github.com/tommeagher>`_!)

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* Add ``update_processed_files`` method to get page, file hash and other data that's not available upon upload.
* Add ``pages``, ``file_hash``, ``id`` and ``title`` to items tracked in database.
* Create database upon ``DocumentCloudUploader`` initialization.
* Get rid of the file extension in the document title. (`13 <https://github.com/anthonydb/pneumatic/issues/13>`_)
* Bug fix: Properly test for presence of data and title keyword arguments.

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* Remove extra line space on csv dump in Windows.

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* Report number of files to be uploaded before starting.
* Better reporting of upload progress and results.
* More comprehensive filetype exclusion list.
* Record pdf and text URLs in database.
* Uploads that return status codes other than 200 are handled.