Fix bug in handling of vector data

[IshaanDesai]

The Micro Manager could not handle the case where a micro simulation returns vector data in the form of a list. This was because the data collection for adaptivity was done on a predefined numpy.array data structure. Now the data collection is done in a Python list and the list is converted to a NumPy array only just before the data is used for the similarity calculation.

Checklist:

• I made sure that the CI passed before I ask for a review.
• I added a summary of the changes (compared to the last release) in the CHANGELOG.md.
• I will remember to squash-and-merge, providing a useful summary of the changes of this PR.

[mathiskelm]

Fixes issue #144 also in my application. Looks good!