MAINT: remove some inf-related warnings from logsumexp
MAINT: mis-parenthesization
Exactly one space required before assignments
Merge pull request #4016 from argriffing/logsumexp-warnings

MAINT: remove some inf-related warnings from logsumexp
In dendrogram(): Correct an argument name and a grammar issue.
Merge pull request #4024 from cbrueffer/misc

In dendrogram(): Correct an argument name and a grammar issue in the docstring.
Merge pull request #4023 from lizzardius/master

MAINT: Exactly one space required before assignments in setup.py