Now dev dependencies in package.json are no more hardcoded, instead they are generated (like dependencies) from ServerGenerator.hs and inserted as devDepsChunk.
- `wasp db migrate-save` and `wasp db migrate-up` got replaced with `wasp db migrate-dev`.
- Wasp now has a declarative way to express which db is used, postgresql or sqlite: `db { system: PostgreSQL }`.
- Prisma is now at the latest version, 2.21. PSL parser was upgraded to work with this.
- PostgreSQL can now be used for local development.
- We migrated examples/realworld to work with this new version of Wasp.