Added basic gui with static data.
Added basic database support using sqlalchemy.
Replaced QTreeWidget with QTableWidget.
Workouts can now be added, edited, and deleted.
Breadcrumb for workout shows date.
Exercises can now be added, edited, and deleted.
Sets can now be added, edited, and deleted.
Sorted exercises by name.
Workouts are listed in reverse order.
Implemented setup.py (issue #5).
Add feature to distinguish between production and development databases

pumped.application.main() takes a parameter to determine the runtime mode. By
default, this is "production". Developers should run `python -m pumped` from
the project root to invoke __main__.py, which will pass "development" to
pumped.application.main().
Add logging

The root logger 'pumped' is configured in main(). This configuration is shared
by all derived loggers, which therefore do not need configuring.
Merge branch 'feat-logging' into develop
Update README and LICENSE files (#7)

The README contains short instructions for both users and developers on how to
obtain, install, and contribute to pumped. It's in markdown format so github
presents it nicely.
Create application icons (#4)

Application icons (excluding the main application icon itself) have been
added. The icons are installed into the package via package_data in
setup.py.
Merge branch 'feat-icons' into develop
Merge branch 'develop'