Use main branch of presage

[gferon]

in Cargo.toml, presage was pointing to a specific commit, which I missed in #102. This should be the real deal!

[gferon]

@boxdot would you prefer adding a 0.2.2-1 entry in the changelog or simply update the tag once this is merged?

[boxdot]

@boxdot would you prefer adding a 0.2.2-1 entry in the changelog or simply update the tag once this is merged?

I guess I would prefer 0.2.3.

[gferon]

@boxdot would you prefer adding a 0.2.2-1 entry in the changelog or simply update the tag once this is merged?

I guess I would prefer 0.2.3.

then let me add an entry for 0.2.3 in the same PR.