Multi dim eval basis

[BalzaniEdoardo]

This PR follows #274, additional edits to the basis for generalizing the behavior and removing the __call__ method.

• Allow for N-dim inputs for both conv and eval basis
• Rename the __call__ method of basis to _evaluate
• Make sure that the notebook exec error break the build (conf.py config)

EDIT:

• I made the "set_kernel" method public because I am using it in the doc mostly
• The set_kernel will be removed from Eval basis in PR Set shape basis method #276 (as discussed with @billbrod )

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.13%. Comparing base (2932475) to head (3691356).
Report is 26 commits behind head on development.

Additional details and impacted files

@@             Coverage Diff              @@
##           development     #275   +/-   ##
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  Coverage        96.13%   96.13%           
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  Files               34       34           
  Lines             2507     2507           
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  Hits              2410     2410           
  Misses              97       97           

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[billbrod]

Just some small tweaks in wording, but otherwise this looks good to go! It's good how straightforward a change this was.