Fix `@stamp/core/mergeOne()` not correctly handling properties with the value `undefined`

[PopGoesTheWza]

Current implementation of @stamp/core/mergeOne() when hitting an src property with the value undefined simply returns (thus returning a final merged result of undefined. Code should be altered so that it continues the loop and compute the correct merged result.

• stamp/packages/collision/index.js line 30

This issue relates with #52

[koresar]

Can't find what you mean in the stamp/packages/collision/index.js:30 file.

[PopGoesTheWza]

@koresar I likely fumbled with the reference with/in collision.

Fact is you already have the fix identified (changing return to continue in mergeOne()

[koresar]

Then closing this issue as (soon to be) Done