Update dependencies
Build ic-modal
A destroyed modal can not get the focus.

`lastOpenedModal` is reset when destroying without closing

[Fixes #11]
Fix mistake in readme

The bound attribute to close the modal is actually named close-when, not closed-when, as the docs previously stated.
Merge pull request #15 from dajulia3/master

Fix mistake in readme
Merge pull request #13 from Cyril-sf/fix-last-opened

A destroyed modal can not get the focus.
Added an option to always render ic-modal-main.