Pyttb

- New:
- Dev Support:
- Linting: support for `pyttb_utils` and `sptensor` (PR https://github.com/sandialabs/pyttb/pull/77)
- Pre-commit: support ntjohnson1 in (PR https://github.com/sandialabs/pyttb/pull/83)
- Fixed/Completed:
- `hosvd`: Negative signs can be permuted for equivalent decomposition (PR https://github.com/sandialabs/pyttb/pull/82)
- Versioning: using dynamic version in pyproject.toml (PR https://github.com/sandialabs/pyttb/pull/86)
- Package Testing: fixed problem with subprocesses (PR https://github.com/sandialabs/pyttb/pull/87)

- New:
- Added `hosvd` Tuecker decomposition (Issue 56, PR 67)
- Added `tucker_als` Tuecker decomposition (PR 66)
- Autoformatting using `black` and `isort` (Issue 59, PR 60)
- Updated/Ongoing:
- Included more testing for improved coverage (Issue 78, PR 79)

- New:
- Added `ttensor` class and associated tests (Issue 10, PR 51)
- Fixed/Completed:
- Tensor slicing now passes through to `numpy` array slicing (Issue 41, PR 50)
- Updated/Ongoing:
- Included more testing for improved coverage (Issue 14, PR 52)

- Remove deprecated `numpy` code associated with aliases to built-in types and ragged arrays (Issue 48, PR 49)

- Fixed `pyttb_utils.tt_ind2sub` (Issue 45, PR 47)
- Implemented `ktensor.score` (Issue 46, PR 47)

- Fixed `tenmat` to accept empty arrays for `rdims` or `cdims` (Issue 42, PR 43)
- Implemented `tensor.ttt` (Issue 28, PR 44)
- Adding GitHub action to publish releases to PyPi