Experimental interfaces and traits for TensorNetwork-derived types

[mofeing]

This is a experiment to have a cleaner and more reusable interfaces between types in the TensorNetwork hierarchy of types.

To do

•  Refactor replace!
• Rethink about using Core.kwcall for keyword-dispatching
• Write a post on docs about how this works internally
• Remove calls to previous "dispatch system" (not really dispatch)
• Fix docstrings of @kwdispatch/@kwmethod methods

Related links

• https://github.com/bcbi/ExtensibleUnions.jl
• https://github.com/jolin-io/WhereTraits.jl
• https://github.com/WschW/StructuralInheritance.jl
• https://github.com/mind6/Inherit.jl
• https://github.com/thautwarm/CanonicalTraits.jl
• https://github.com/Suzhou-Tongyuan/ObjectOriented.jl
• https://github.com/EdBarrancos/ObjectSystem.jl
• https://github.com/rjplevin/Classes.jl

[codecov]

Codecov Report

Attention: Patch coverage is 88.39779% with 21 lines in your changes missing coverage. Please review.

Project coverage is 70.55%. Comparing base (3c2861f) to head (de7c8bd).
Report is 2 commits behind head on master.

Files	Patch %	Lines
src/TensorNetwork.jl	89.36%	10 Missing ⚠️
src/Quantum.jl	86.95%	9 Missing ⚠️
src/Ansatz/Chain.jl	84.61%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #172      +/-   ##
==========================================
+ Coverage   67.08%   70.55%   +3.46%     
==========================================
  Files          27       27              
  Lines        1996     2000       +4     
==========================================
+ Hits         1339     1411      +72     
+ Misses        657      589      -68     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[mofeing]

It's weird that the test fails when it works in my laptop...

[Todorbsc]

It's weird that the test fails when it works in my laptop...

They are working in my laptop as well. It is something about the CI that we must check but, from my side, this is ready for merge 👍

[mofeing]

Finally I managed to reproduce the test fails in my laptop. Still don't know why it was working before 🤷.

[Todorbsc]

Finally I managed to reproduce the test fails in my laptop. Still don't know why it was working before 🤷.

What did you do to make them fail in your laptop?

[mofeing]

Nothing really. I think it was something related to some commits or some bug in the code. Still weird.

[mofeing]

@jofrevalles @Todorbsc @starsfordummies the only thing that bugs me is if we want all methods to be callable from subtypes; i.e. we want to be able to push!/delete! Tensors from a MPS.