Import design docs (RFCs)

docs/rfcs/workweek.md

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+---
+title: "Taskwarrior - Work Week Support"
+---
+
+## Work in Progress
+
+This design document is a work in progress, and subject to change. Once
+finalized, the feature will be scheduled for an upcoming release.
+
+
+# Work Week Support
+
+Taskwarrior supports the idea that a week starts on either a Sunday or a Monday,
+as determined by configuration. This was added eight years ago, simply for
+display purposes in the `calendar` report. Since then its use has propagated and
+it influences the `sow` date reference.0
+
+Further requests have been made to make this more flexible, so that the notion
+of \'weekend\' can be defined. Furthermore, the idea that every week has a
+weekend has also been questioned.
+
+It has become clear that a `weekstart` setting, and the notion of a weekend are
+no longer useful.
+
+
+## Proposed Support
+
+One option is to allow the user to completely define a work week in the
+following way:
+
+    workweek=1,2,3,4,5
+
+With Sunday as day zero, this states that the work week is the typical Monday -
+Friday. From this setting, the meaning of `soww` and `eoww` can be determined,
+as well as `recur:weekday`.