Adjustments for embedding in a host app

[JWMB]

In my project I want to launch JsPsych experiments from within a host "game". For this, the host needs to be in control of what elements are used and which source to provide (keyboard) events.

Some additional typings are provided for the JsPsych constructor which was previously untyped.

(Disclaimer: not a JS/TS developer, not well-versed in their idioms and conventions)

[changeset-bot[bot]]

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Latest commit: 9719534de696538f13e10145fa6dee30bb84b0b7

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