AmpelVault: restore get_named_secret (#95)

NamedSecret: resolve with validation hook (#94)

Treat traceless fields as optional when validating AmpelUnit (#93)

* Treat traceless fields as optional in AmpelUnit

* Set default values for access and policy

Allow dynamically registered units in AuxUnitRegister (#92)

* fix: simplify AuxUnitRegister code paths

* Bump version to 0.10.5a0

ci: switch to toml v1 compliant parser

For dotted-key support

ci: avoid restoring the venv cache just for install

ci: switch to toml v1 compliant parser

For dotted-key support

Bump version to 0.10.4

AmpelAlert: restore id-based hash

fix: add defaults to view fields, make init kw-only