Feature: working patterns and flexibility index

[martinctc]

Summary

This branch adds the working patterns and flexibility index features to wpa.

Changes

New functions

The following new functions are added in this PR:

1. workpatterns_classify()
2. workpatterns_classify_bw()
3. workpatterns_classify_pav()
4. workpatterns_report
5. flex_index()
6. plot_flex_index()

Other changes

• Additional checks and minor revisions were performed to make sure that the documentation is up to date.
• All the functions also now allow dynamic signals, as per Feature: allow dynamic signals for all work patterns functions #56
• Fixed minor bug with the "plot-area" return option, where white space sometimes appears between the areas of the working patterns segments in an area plot.
• This also increments the package version to v1.4.0.

Checks

• All R CMD checks pass
• roxygen2::roxygenise() has been run prior to merging to ensure that .Rd and NAMESPACE files are up to date.
• Documentation are complete and in a consistent style to the main package.

Notes

This fixes #56.

[moralec]

Are we waiting to integrate this after we are in CRAN? :)

[martinctc]

Are we waiting to integrate this after we are in CRAN? :)

Yes @moralec - this is now incremented as v1.4.0 as it qualifies as a more significant change to the package. The CRAN process is still undergoing (another re-submission is needed), which will continue under the v1.3.1 banner on #54.

I think there are some other checks are required on this PR, e.g.

1. Check that all combinations of the code run properly (all variations of arguments).
2. Check that the ability to accept 'dynamic' signals is working, i.e. ability to use Unscheduled_Calls on top of Emails_sent and IMs_sent

If we want to accelerate the merge, I would suggest only doing 1 and only check for 2 as a new feature request (given all checks pass).