v0.3.4

ITensors v0.3.4

Diff since v0.3.3

Closed issues:

• [ITensors] [BUG] Some autodiff errors / missing rules (#815)
• [ITensorGPU] [BUG] SVD truncation fails for single precision (#890)

Merged pull requests:

• [ITensors] Update rrules for index manipulation functions for ITensors (#888) (@DomCRose)
• Allow cutruncate to work for Float32s (#897) (@kshyatt)
• [ITensors] [ENHANCEMENT] Add some helper functions for converting element types of ITensors (#898) (@mtfishman)