Some more fixes, and one (minor) backwards incompatible change!
If you were previously using the -a flag to indicate append when merging, this flag now sets the array merge strategy, and so you need to explicitly set it to append -a=append.
- Explode anchors now applies to map keys too (#466)
- Fixed printing to STDERR incorrectly (#479, #486, #472, #537)
- Fixed outputting non string keys to json (null, numbers) (#519)
- Can now specify how you want arrays to be merged in the merge command using the
-a/--arraysflag with one ofupdate/append/overwrite. Note that this has a minor backwards incompatibility: if you were previously using the-aflag to indicate 'append', you now need to set it like so-a=append(#455)