* Print pods from SignedPodBuilder
* Add additional print to test printing SignedPodBuilder
* Mock-prove and print MainPod
* Implement ToFields for custom predicates and dependencies
* Test: print serialization of a recursive batch
* Rearrange serialization of CustomPredicate so args_len is always in the same position
* Serialize predicates with first entry nonzero to avoid collision with padding
* Off by one error in ethdos test BatchSelf(2)
* cargo fmt
* not a typo
* Typos, trying again
Extend merkletree spec, init SignedPod section, add typos checker in CI
- extend merkletree spec, converting old hand-drawn diagrams to drawio
diagrams, and adding new diagrams (related: #6)
- init SignedPod section (related: #2)
- initial draft of the types dictionary, set, array (related: #26)
- add typos checker in CI (and correct the ones that were detected)
Note on drawio diagrams: each image file contains the metadata to edit the diagram in the draw.io website.
