installation: SQLAlchemy>=1.0, SQLA-Utils>=0.30
- INCOMPATIBLE Upgrades minimum SQLAlchemy version to resolve Enum life cycle problems on PostgreSQL. (closes #2351)
- Upgrades minimum SQLAlchemy-Utils version to solve version conflict. (closes #3039) (closes #3040)
- Upgrades minimum WTForms-Alchemy version to solve incompatibility with latest version of SQLAlchemy-Utils. (see kvesteri/wtforms-alchemy#80)
- Fixes tags models for compatibility with last version of SQLAlchemy.
Signed-off-by: Tibor Simko <tibor.simko@cern.ch>