v1.5.0

Enhancements

• refactor 'isometrize' methods including new "cayley", "householder" and
  "torch_householder" methods. See :func:quimb.tensor.decomp.isometrize.
• add :meth:~quimb.tensor.tensor_core.TensorNetwork.compute_reduced_factor
  and :meth:~quimb.tensor.tensor_core.TensorNetwork.insert_compressor_between_regions
  methos, for some RG style algorithms.
• add the mode="projector" option for 2D tensor network contractions
• add HOTRG style coarse graining and contraction in 2D and 3D. See
  :meth:~quimb.tensor.tensor_2d.TensorNetwork2D.coarse_grain_hotrg,
  :meth:~quimb.tensor.tensor_2d.TensorNetwork2D.contract_hotrg,
  :meth:~quimb.tensor.tensor_3d.TensorNetwork3D.coarse_grain_hotrg, and
  :meth:~quimb.tensor.tensor_3d.TensorNetwork3D.contract_hotrg,
• add CTMRG style contraction for 2D tensor networks:
  :meth:~quimb.tensor.tensor_2d.TensorNetwork2D.contract_ctmrg
• add 2D tensor network 'corner double line' (CDL) builders:
  :func:~quimb.tensor.tensor_builder.TN2D_corner_double_line
• update the docs to use the furo <https://pradyunsg.me/furo/>_ theme,
  myst_nb <https://myst-nb.readthedocs.io/en/latest/>_ for notebooks, and
  several other sphinx extensions.
• add the 'adabelief' optimizer to
  :class:~quimb.tensor.optimize.TNOptimizer as well as a quick plotter:
  :meth:~quimb.tensor.optimize.TNOptimizer.plot
• add initial 3D plotting methods for tensors networks (
  TensorNetwork.draw(dim=3, backend='matplotlib3d') or
  TensorNetwork.draw(dim=3, backend='plotly')
  ). The new backend='plotly' can also be used for 2D interactive plots.
• Update :func:~quimb.tensor.tensor_builder.HTN_from_cnf to handle more
  weighted model counting formats.
• Add :func:~quimb.tensor.tensor_builder.cnf_file_parse
• Add :func:~quimb.tensor.tensor_builder.random_ksat_instance
• Add :func:~quimb.tensor.tensor_builder.TN_from_strings
• Add :func:~quimb.tensor.tensor_builder.convert_to_2d
• Add :func:~quimb.tensor.tensor_builder.TN2D_rand_hidden_loop
• Add :func:~quimb.tensor.tensor_builder.convert_to_3d
• Add :func:~quimb.tensor.tensor_builder.TN3D_corner_double_line
• Add :func:~quimb.tensor.tensor_builder.TN3D_rand_hidden_loop
• various optimizations for minimizing computational graph size and
  construction time.
• add 'lu', 'polar_left' and 'polar_right' methods to
  :func:~quimb.tensor.tensor_core.tensor_split.
• add experimental arbitrary hamilotonian MPO building
• :class:~quimb.tensor.tensor_core.TensorNetwork: allow empty constructor
  (i.e. no tensors representing simply the scalar 1)
• :meth:~quimb.tensor.tensor_core.TensorNetwork.drop_tags: allow all tags to
  be dropped
• tweaks to compressed contraction and gauging
• add jax, flax and optax example
• add 3D and interactive plotting of tensors networks with via plotly.
• add pygraphiviz layout options
• add :meth:~quimb.tensor.tensor_core.TensorNetwork.combine for unified
  handling of combining
  tensor networks potentially with structure
• add HTML colored pretty printing of tensor networks for notebooks
• add quimb.experimental.cluster_update.py

Bug fixes:

• fix :func:~quimb.tensor.decomp.qr_stabilized bug for strictly upper
  triangular R factors.

Full Changelog: 1.4.2...v1.5.0