runtime: make r5js.TrampolineHelper a @struct.
runtime: make r5js.Continuation a @struct.
runtime: run trampoline_helper.js through the linter.
runtime: move trampoline_helper.js under runtime/.
runtime: make r5js.TrampolineHelper.beforeThunk private, add getter+setter.
runtime+misc: make r5js.TrampolineHelper.nextContinuable private + get + set.
runtime+misc: make r5js.TrampolineHelper.ans private, add getter+setter.
runtime+misc: make r5js.Continuation.nextContinuable private + getter/setter.
runtime: make r5js.Continuation.beforeThunk private + setter.
runtime: run continuation.js through the linter.
runtime: move continuation.js under runtime/.
runtime: make r5js.ContinuableHelper a @struct.
runtime: run continuable_helper.js through the linter.
runtime: move continuable_helper.js under runtime/.
runtime: run trampoline.js through the linter.
runtime: move trampoline.js under runtime/
runtime: correct example in r5js.trampoline JsDoc.
runtime: remove unused logger param to r5js.trampoline().
api: remove various unused logger params.