BlackRock: shape parameter for memap

[luiztauffer]

Added a shape parameter to avoid the error #1704

Fix #1704

[zm711]

Otherwise this seems fine to me.

[luiztauffer]

@zm711 I'll still do some checks before merging this, changing it to draft for now

[luiztauffer]

the resulting extracted data seem to be correct

[samuelgarcia]

OK for me.
Merci Luiz.

[zm711]

Good by me. Will merge once tests pass :)

[luiztauffer]

tests seem to be breaking for plexon at python 3.9, but apparently not related to the changes here

[zm711]

Yeah this was a previous issue plexon2 only works on windows so we are trying to run it through wine and when running it through wine it often fails to open the file (even the plexon dev's don't know why that happens. I'll try rerunning one more time and if it still fails I'll merge then open an issue to troubleshoot. Normally a re-run or two fixes it.

EDIT: on our main branch it appears to have failed on 3.12 so I don't think this is a python version issue. maybe a wine issue or maybe the normal flakiness of the file failing to open.

[zm711]

Merging as the test failures are unrelated to this PR. I opened issue #1707 for us to figure out this flakiness and tests passed before the comment (documentation not code change) was added :)