v0.11.6

Pluto v0.11.6

Diff since v0.11.5

Closed issues:

• Give more helpful error message when address is already in use (#143)

Merged pull requests:

• Automatically select an open port ... (#266) (@Paethon)
• README: fix JSON.jl license link (#282) (@zdroid)
• 🦈 Performance! MsgPack for faster images and pre-rendered md (#285) (@fonsp)