v4.30.0-rc1

feat(Logics/Propositional): definitions (#89)

This PR defines propositions for propositional logic, including notation
for the logical connectives. A `Theory` is a set of `Proposition`. Also
defines minimal, intuitionistic and classical theories, and extensions
of maps `Atom → Atom'` to maps `Proposition Atom → Proposition Atom'`
and `Theory Atom → Theory Atom'`.

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Co-authored-by: twwar <tom.waring@unimelb.edu.au>

v4.29.0

chore: bump toolchain to v4.29.0 (#463)

Co-authored-by: Chris Henson <chrishenson.net@gmail.com>

v4.29.0-rc8

chore: bump toolchain to v4.29.0-rc8 (#457)

v4.29.0-rc7

chore: bump toolchain to v4.29.0-rc7 (#452)

v4.29.0-rc3

chore: bump toolchain to v4.29.0-rc3 (#382)

v4.29.0-rc2

chore: bump toolchain to v4.29.0-rc2 (#368)

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

v4.29.0-rc1

chore(CombinatoryLogic): miscellaneous grind golfing (#345)

Low priority

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Co-authored-by: twwar <tom.waring@unimelb.edu.au>
Co-authored-by: Chris Henson <chrishenson.net@gmail.com>