v0.12.1

Pluto v0.12.1

Diff since v0.12.0

Closed issues:

• Support defining methods of a function in multiple cells (#177)
• Images dont show in exported HTML (#380)
• f(x).g() not recognised? (#418)
• Use URL.revokeObjectURL() for images (#455)
• Decide on JS API (#487)

Merged pull requests:

• 👒 Include function signature in reactive edge - fix #177 (#538) (@fonsp)