Called Shots, Surprise & Attack Mods

* v5.3.3 Fix targeted "Punch/Wrestle" and "Rod of Cancellation" attacks which did not build the necessary damage ability macros.
* v5.4.0 Added called shot functionality.
* Fixed --set-mods to be able to use a round count of zero to expire in current round.
* Added surprise modifier tags to --set-mods.
* v5.4.2 Added one-off situational attack mods ref PHB Table 51, and various creatures.
* Considerable reworking of doSetMod().
* More parameters evaluated by evalAttr().
* Fixed Saving Throw negative targets forcing "Natural 1" rolls.