v3.1.0

LinearMaps v3.1.0

Diff since v3.0.1

Closed issues:

• Make LinearMap objects callable (#106)
• performance issue with Kronecker product and complex values (#125)

Merged pull requests:

• Improve performance of Kronecker products (#126) (@dkarrasch)
• Restrict ScaledMap to RealOrComplex (#127) (@dkarrasch)
• Make LinearMaps callable (#128) (@dkarrasch)