initial attempt
working on
tests pass, refactory in progress
fixed substitution bug and added tests
hash function restored
merged with master
fixes
metric bug fixed, various refactories
inverse metric bug fixed; Kronecker Delta now can have data
tested TensMul.__call__ on contracted tensors
removed destructors, they were renamed to experimental methods
restored deprecated VTIDS
Merge branch 'master' into tensor_substitute_bug
minor fixes; added some usage info on docstrings
added deprecation warning
removed TIDS from documentation, this should not be used by end users, nor should end users know of the TIDS object.
Merge pull request #2805 from Upabjojr/tensor_substitute_bug

Tensor substitute bug