v0.6.22

Zygote v0.6.22

Diff since v0.6.21

Closed issues:

• Complex gradient on real function with complex intermediates (#342)
• Adjoints for functions of specialized matrices (#402)
• Gradient of inv and logdet UpperTriangular matrix is not UpperTriangular (#431)
• Trying to differentiate a function with complex and real inputs results in error (#917)

Merged pull requests:

• Use ProjectTo in broadcasting & gradient (#1044) (@mcabbott)
• Allow buffer typevar in CuArray type (#1062) (@DhairyaLGandhi)