v1.1.0

JSONRPC v1.1.0

Diff since v1.0.0

Merged pull requests:

• Add support for defining parameter and return structures (#8) (@davidanthoff)
• Fix handling of msg with params::Nothing (#9) (@davidanthoff)
• Julia Package Butler Updates (#12) (@github-actions[bot])
• Properly convert request return value (#13) (@davidanthoff)
• Fix return type for arrays for send (#15) (@davidanthoff)
• Change error handling (#16) (@davidanthoff)
• follow #13 (#17) (@aviatesk)