start move to new coastline scheme
coastlineBest() handles new coastline suite
section summary works again
data(section) is now A03
ctd plots (again) autoselect coastline
swTheta doc:  use deep Atlantic profile
use sapply() instead of unlist(lapply())
README slightly altered
webtide() improvements

Actually, webtide() has an odd “feel”.  It should perhaps break apart
lookup, prediction, and plotting.  And maybe the plotting should be
left to the user since it’s so simple and users might prefer to control
the aesthetics.
webtide(): draw coastlines; indicate selected point
webtide() improvements
webtide() uses appropriate coastline for domain
webtide() improvements
TS diagrams now have black freezing lines
section[[]] fix recent bug
oceApprox() improvements
oceApprox() now handles method "unesco"
clean a warning
plot.ctd(): improve map plots
binMean1D and 2D permit case with missing f