Minor fixes to v1.9.3
Fixes to magerr and magcon for v1.9.3
Minor magerr fix for log error bars.
CRAN v1.9.3
First v1.9.4

Implemented some changes to the bad behaviour in magmap at the suggestion of Angus. Made additional fixes to this, hopefully okay now and more flexible since bad will be changed as per data.

Improved magerr speed.
Some documentation improvements.
Added asinh mapping example.
Decided Angus was wrong, and changed the bad argument in magmap back to mean in the context of range, not lo and hi (i.e. it isn't processed as per the data argument).

Note for future- ignore Angus ;-)
Various fixes and document updates.