v0.3.57

ITensors v0.3.57

Diff since v0.3.56

Merged pull requests:

• [BlockSparseArrays] Towards abelian block fusion (#1326) (@mtfishman)
• [CI] Add pre-commit guidelines (#1334) (@ogauthe)
• [ITensors] Fix some MPO ChainRules bugs (#1335) (@mtfishman)

Closed issues:

• [ITensors] [BUG] Pullback of addition of MPO's not working (#1313)
• [ITensors] [BUG] Inconsistent truncation with maxdim (#1317)