3.1.0: Typescript support (#188)
* Install typescript. * Configure TypeScript for declaration output. * Install @types/classnames * Install @types/react-dom. * Declare types. * Fix optionality. * Add null guard on clearTimeout. * declaration:build script * Fix property type. * Fix typing. * Rename declaration:build to build-types. * Fix type to include children. * Add typecast. * Refactor to expose typeguard and fix out-of-bounds issue. * Repeat type guard to make compile. * Constraint label to string. * Fix label proptype. * Fix Modal's handleOverlayClick * Added static release artefacts Co-authored-by: Ernesto Garcia <[email protected]> Co-authored-by: Henning Muszynski <[email protected]>