Pyramid-analytics

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- Fixed MANIFEST.in to include all necessary files

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- Added AnalyticsHelper to the package, provide deeper Pyramid integration.

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- Relying on Pyramid's asbool helper for more robust boolean detection.

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- Allow for the following segment.io configuration options:
``secret``,
``flush_at``,
``flush_after``,
``async``,
``send``,
``max_queue_size``

- Logging configuration is also supported