Update tests for full coverage.
Update after finding issues with tests.
Merge branch 'master' of https://github.com/yahoo/intl-messageformat into tests
Update after importanted changes.
Merge branch 'master' of https://github.com/yahoo/intl-messageformat into tests
Revert hasOwnProperty removal.
Merge branch 'master' of https://github.com/yahoo/intl-messageformat into tests
Update tests due to changes in `rearrange` branch.