Add support for `step` prop

[wojtekmaj]

See wojtekmaj/react-datetime-picker#70 (comment)

[sinnbeck]

Any chance this will be added in the near future? I need the feature now, but if a new release is near, I wont start implementing it myself :)

[github-actions]

This issue is stale because it has been open 90 days with no activity. Remove stale label or comment or this issue will be closed in 14 days.

[github-actions]

This issue is stale because it has been open 90 days with no activity. Remove stale label or comment or this issue will be closed in 14 days.