v2.3.0

LinearOperators v2.3.0

Diff since v2.2.3

Closed issues:

• Scalar product returns an Array (#221)

Merged pull requests:

• Update tutorial (#213) (@geoffroyleconte)
• GPU compat with composite operators and 3-args mul! (#219) (@geoffroyleconte)
• Fix #221 (#222) (@geoffroyleconte)
• Normest (#224) (@farhadrclass)
• version = "2.3.0" (#227) (@farhadrclass)