react-overlay ^0.8 removed transition components, and instead uses
react-transition-group package. Thus react-bootstrap-modal does not support latest versions of react-overlay. This commit introduces changes analogous to
https://github.com/react-bootstrap/react-bootstrap/pull/2676, using react-transition-group instead.
react-overlay ^0.8 removed transition components, and instead uses react-transition-group package. Thus react-bootstrap-modal does not support latest versions of react-overlay. This commit introduces changes analogous to https://github.com/react-bootstrap/react-bootstrap/pull/2676, using react-transition-group instead.