Bump for 4.1.3 release

[knolleary]

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Proposed changes

Checklist

• I have read the contribution guidelines
• For non-bugfix PRs, I have discussed this change on the forum/slack team.
• I have run npm run test to verify the unit tests pass
• I have added suitable unit tests to cover the new/changed functionality

[coveralls]

coverage: 81.27%. remained the same
when pulling de4e533 on rel413
into 4c4a762 on master.