changes in version 0.99.9

- add scalebar() example to vignette
- scalebar() support for points/shapes
- infer coordinate system from layer if unspecified

changes in version 0.99.8

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

changes in version 0.99.7

- added 'scalebar' display
- near-comprehensive unit testing
- default to random label coloring by instance
- multi-scale adjustment (= mapping to physical space)
- address R CMD check notes/warnings toward Bioc submission
- support for 3D (z) and 4D (t) through slicing or max-projection
- drop various code bits in favor of new 'spatialdataR' functionality

changes in version 0.99.6

- renaming of 'SpatialData' classes
- improved visualization of labels
- fixed auto-contrasting for HnE images
- fixed channel-merging for multi-plex images

changes in version 0.99.5

- fix visualization of circles

changes in version 0.99.4

- bump R version dependecy
- make use of some newly implemented SD utilities
- rewrite of image visualization (speedup, auto-contrasting)

changes in version 0.99.3

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

changes in version 0.99.2

- in 'plotImage', added support to visualize channels of choice,
  as well as 'cl' argument to control constrast limits
- updated vignette to include corresponding examples

changes in version 0.99.1

- various fixes related to moving 'instance/region_key' to 'int_colData'
- added examples of 'mask'ing in the vignette

changes in version 0.99.0

- initialization of 'SpatialData.plot' package