- Changed password setup to use libsodium and argon2id (regular SHA256
hashing for passwords is inadequate as modern GPU's can hash generate
billions of hashes per second).
- Added code to auto migrate old passwords to the new password_hash if
the existing password_hash matches either of the legacy password
generation schemes (SHA1 or SHA256).
- Added migration to support new password_hash format length
- Added column password_revision. This field will default to 0, which
all passwords will have till they're updated. After that each password
hash method has a revision.
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