Update the npm dependencies to 1.5.0

1.4.1: Fix the minor type issue of van.state in van.d.ts

Update VanJS dependencies to 1.4.0

1.3.0: More robust dependency detection in binding functions

1.2.8: Add support for custom event handlers. Fixes vanjs-org#2, vanj…

…s-org#146.

1.2.7: Export 2 more types in `van.d.ts`

1.2.6: Fix the type error message for `Props` in `van.d.ts`

Upgrade the version of vanjs-core to 1.2.5

1.2.4: Fix the incompatibility issue between `van.debug.js` and VanX

Update version to 1.2.3