…incetonUniversity#2744)

• inputport.py
  _parse_port_specific_specs(): fix bug in which COMBINE was not parsed when specified in an InputPort specification dict (though still some weirdness in passing spec through to constructor, requiring function assignment in place)

• port.py
  _parse_port_spec():  add passing of Context.string for local handling based on caller (e.g., warning messages)

• EMstoragemechanism.py
  - refactor memory_matrix to use learning_signals

 • emcomposition.py
   - refactor to use memory_matrix of storage_node if that is implemented

Co-authored-by: jdcpni <pniintel55>

…nUniversity#2743)

… of relying on tolerance

Signed-off-by: Jan Vesely <[email protected]>

…by 40x

It's still enough to recover the parameters and reduces test time
significantly.

Signed-off-by: Jan Vesely <[email protected]>

…niversity#2753)

Reduce the number of estimates by a factor of 40, it's enough to pass the test and it significantly reduces test running time.
Provide expected results for different optimization methods

* origin/devel:
  tests/ParameterEstimationComposition: Reduce the number of estimates by 40x
  tests/ParameterEstimationComposition: Provide expected result instead of relying on tolerance
  requirements: update dill requirement from <0.3.7 to <0.3.8 (PrincetonUniversity#2743)
  Feat/em composition refactor learning mech (PrincetonUniversity#2754)
  Fix/input port combine (PrincetonUniversity#2755)
  requirements: update beartype requirement from <0.15.0 to <0.16.0 (PrincetonUniversity#2744)