v1.21.1

GMT v1.21.1

Diff since v1.21.0

Merged pull requests:

• Fix a regresion in colorbar where a default frame was added even if L option was used. (#1582) (@joa-quim)

Closed issues:

• Specifying a colourmap on ternary plots with image=true adds a large grey square (#952)
• Precompiling error on Julia 1.8.5 on Ubuntu 22.04 (#1113)
• wmsread fails on wms=wmsinfo("http://ows.mundialis.de/services/service") (#1500)
• Register v"1.20.0" (#1557)
• ERROR: GMT: Failure to open virtual file (#1558)
• GMT build error in Julia 1.11 and [email protected] (#1574)
• showfig not displaying figure in Pluto notebook ([email protected], [email protected] [email protected]) (#1575)