Update Makefiles with help tasks
Add execution time to the report -- Task #9628
Fix unittests failing due code changes in 57549235f926bd6e75fd62f52706c34b9c7f326b
Write report.xml to data directory instead of configuration directory
Write report.xml to temporary out directory instead of data directory
Write report.html to data directory with timestamp #92
Remove timestamp from filename of report and write it to the same folder as report.xml
Improve the marking of sent events

In generate_output(), we were marking events as sent by changing the XML
tree and saving it for each form event sent. This change replaces it
with a "sent event index" which simply writes out the form event to a
file and loads it back in if we use the --resume switch.

I've seen a 12% speed improvement during testing.
Merge branch 'develop' into sent-event-index
Update warning about unsent events

Updated the warning message to check the log file first. Also, after
discussing it with some of the other developers, I decided to make the
sent_events file more human-readable. In doing so, I implemented a
faster approach to persisting the list of sent events.  Instead of
pickling the list each time, the latest event simply has to be appended
to the file.
Delete sent_events.idx before a new run
Merge branch 'develop' of https://github.com/ruchidesai/redi into ruchidesai-develop
Merge branch 'ruchidesai-develop' into develop
fixing merge conflicts in tests
Merge branch 'ufl-taeber-sent-event-index' into develop
Resolve merge conflicts
Remove redi_lib.py

redi_lib.py was split up into several files and was previously removed,
but was accidentally restored and recommitted with a subsequent merge.
Update version number to 0.13.0
Update documentation
Update CHANGELOG and AUTHORS.md for v0.13.0