eliocamp/metR: metR 0.15.0

New features

• The contour functions gain a clip argument to only show contours in an area defined by a polygon.
• The kriging argument of the contour functions now can be a numeric to control de number of pixels used.
• Documentation of FitWave() and friends improved (#184, @pascaloettli).

Breaking changes

• The proj argument in geom_contour_fill() and friends now operate over the isolines returned by the isoband package. This might break code that used a custom function to proj.

Bug Fixes

• Guides are compatible with the new versions of ggplot2 (#117 and #185, @teunbrand).
• Contour functions will work even if OutDec is not ".".