BUG: Remove unused import and add missing comma
DOC: Add mention to the changelog

Fixes #568
Merge pull request #569 from ElDeveloper/issue-568

BUG: Remove unused import and add missing comma
REL: version strings didn't get bumped to dev
Merge pull request #570 from wasade/bump

REL: version strings didn't get bumped to dev
BLD: setup is specific on scripts
BUG: to_json didn't handle empty case
DOC: changelog mention
BUG: compute stats didn't handle empty table
DOC: changelog mention
Merge pull request #574 from wasade/issue_571

Issue 571
Merge pull request #572 from wasade/specify_scripts_setup

BLD: setup is specific on scripts