Changes in version 0.99.9                        

    o   add scalebar() example to vignette

    o   scalebar() support for points/shapes

    o   infer coordinate system from layer if unspecified

                       Changes in version 0.99.8                        

    o   interface revision: 'plotImage/Label/Frame' inherit 
	object and coordinate system from 'plotSpatialData'

                       Changes in version 0.99.7                        

    o   added 'scalebar' display

    o   near-comprehensive unit testing

    o   default to random label coloring by instance

    o   multi-scale adjustment (= mapping to physical space)

    o   address R CMD check notes/warnings toward Bioc submission

    o   support for 3D (z) and 4D (t) through slicing or max-projection

    o   drop various code bits in favor of new 'spatialdataR' functionality

                       Changes in version 0.99.6                        

    o   renaming of 'SpatialData' classes

    o   improved visualization of labels

    o   fixed auto-contrasting for HnE images

    o   fixed channel-merging for multi-plex images

                       Changes in version 0.99.5                        

    o   fix visualization of circles

                       Changes in version 0.99.4                        

    o   bump R version dependecy

    o   make use of some newly implemented SD utilities

    o   rewrite of image visualization (speedup, auto-contrasting)

                       Changes in version 0.99.3                        

    o   in 'plotImage', render discrete color 
	legend for multi-channel (non-RGB) images

                       Changes in version 0.99.2                        

    o   in 'plotImage', added support to visualize channels of choice,
	as well as 'cl' argument to control constrast limits

    o   updated vignette to include corresponding examples

                       Changes in version 0.99.1                        

    o   various fixes related to moving 'instance/region_key' to 'int_colData'

    o   added examples of 'mask'ing in the vignette

                       Changes in version 0.99.0                        

    o   initialization of 'SpatialData.plot' package