EAC doesn't support n_clusters=2

[originalnicodr]

Hey there! When trying to use the Evidence Accumulation Clustering class I get an error stating that the number of clusters passed to the class is not supported, and it only supports values within (2, 2147483647) (notice the usage of parenthesis instead of brackets).

It seems that the error comes from doing check_parameter(n_clusters, low=2, param_name='n_clusters') on here. The thing is, by default, check_parameter doesn't include the limits passed as parameters, as seen in its documentation. So to get this working we should instead pass include_left=True or low=1.

Is this project still being maintained? If so I would be more than happy to create a PR for this if you need me to, but figured I would ask first.

Thank you so much for working on the project!