The Animation constructor (and the groups constructors) store raw specified timing input.

[rjwright]

Constructed timed items used to only store a normalized timing object. Now (once #136 lands) they store their specified timing in .timing and their normalized timing in ._timing. The specified timing is stored raw.

This is primarily a problem with number durations or omitted durations, but we also need to flesh out object timing inputs with default values (either stored, or via getters).

[samthor]

Does this bug extend to making these objects "live"?

We now at least generate a dictionary e.g. where timingInput is specified as just a number (aka duration), so that part is fixed.