1. Hyphenated labels are still accepted when parsing scoped keys (so 'sbt test-only' still works)
There is currently no timeline for removing this support for hyphenated keys.
2. Only camelCase is shown for tab completion.
3. AttributeKey.rawLabel provides the unnormalized label.
This should only be used to implement support for accepting hyphenated keys as input for compatibility.
4. AttributeKey.normLabel provides the normalized label (hyphenated converted to camelCase)
* split several source files
* move base settings sources (Scope, Structure, ...) into main/settings/
* breaks cycles. In particular, setting system moved from Project to Def
- make all constructing methods end in = for lowest precedence
- rename Scope constructing method 'apply' to 'in' to allow 'apply' to
be used on single settings as well as tuples and 'in' reads better
KList.map -> transform
can now drop trailing 'H' from multi-Task 'mapH'
compressed Action hierarchy by merging (Flat)Map{ped,All,Failure} into (Flat)Mapped
moved most information in Info into attributes: AttributeMap to allow future changes