[cytoscape] add cy.mount() and cy.unmount()
[cytoscape] add cy.mount() and cy.unmount()

These were added in 3.3.0, so I bumped the version in the header as well.

georgemarshall/DefinitelyTyped,borisyankov/DefinitelyTyped,dsebastien/DefinitelyTyped,borisyankov/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,dsebastien/DefinitelyTyped,markogresak/DefinitelyTyped,mcliment/DefinitelyTyped,georgemarshall/DefinitelyTyped