pypi 0.2.4 release

If following the example in documentation using newt.db then we must use RelStorage<=2.1.1 during install.

v0.2.2

Fixed a bug in BaseWorker.load_items() method which previously resulted
in losing scrape data when the number of workers did not equal the number
of tasks. Now, using any number of workers or pool size will result in
consistent export/save results. While scrape time will change proportional
to the number of workers assigned. Wrote tests to ensure the same.

v0.2.1

Added url parameter to the WorkGroup which is a bit more attractive
API, instead of including the URL in a kwarg. The reason why the URL was
originally included as a kwarg is that depending on how the custom
Spider is set up, the URL may already be specified, and it is redundant to
specify it again. But for API clarity sake, now we just insist the URL is
specified in the WorkGroup. At least, it is easier to read at a quick glance.

v0.2.0

Many API breaking changes.
See README at https://github.com/bomquote/transistor/blob/master/CHANGES

v0.1.1

• standardized SplashScraper attributes: auth, baseurl, browser, cookies,
  crawlera_user, http_session_timeout, http_session_valid, LUA_SOURCE,
  max_retries, name, number, referrer, searchurl, splash_args, user_agent.
• now, nearly all of the SplashScraper attributes can be set via **kwargs if desired
• when initializing a StatefulBook instance, use a **kwarg called keywords to set
  the name of the spreadsheet column heading which contains the target search terms.
  For example: keywords='titles' or keywords='part_numbers'. Defaults to "item".

First tagged/PyPI'd version

v0.1.0

Merge remote-tracking branch 'origin/master'