palr 0.1.0

Behaviour of image_pal() tweaked to match that of graphics::image.default() more closely.
New alias functions bathy_deep_pal() (bathyDeepPal), chl_pal() (chlPal), ice_pal() (icePal), sst_pal() (sstPal) to start move to consistent and better names. The old function names are soft deprecated.
New function image_pal() to return the colours created by image() for numeric input. Includes partner functions image_raster() and image_stars() to create objects from raster and stars format. Both packages now included as Suggests.
Converted NEWS to NEWS.md.

VERSION 0.0.6

Added examples and tests
Installed oisst as a built-in data set.
fixes for 3.3.0
added bathyDeepPal

VERSION 0.0.5

new function mk_timePal

VERSION 0.0.4

renamed functions to camel case
improved vignette

VERSION 0.0.2

added ice.pal

VERSION 0.0.1

basics working