JSON API - Experimental

• Returning archived and active/created contracts from /command/exercise enpoint. See issue #2925.
• Flattening the output of the /contracts/search endpoint. The endpoint returns ActiveContract objects without GetActiveContractsResponse wrappers. See issue #2987.

SDK

• Bundle the daml-trigger package. Note, this package is experimental and will change.
• Releases can now bundle additional libraries with the SDK in $Daml_SDK/daml-libs. You can refer to them in your daml.yaml file by listing the package name without .dar extension. See issue #2979.

Daml Studio

• damlc ide now also supports a --target option. The easiest way to specify this is the build-options field in daml.yaml.
• Fix a bug where the same module was imported twice under different file paths caused module name collisions. See issue #3099.

Ledger

• Improve SQL backend performance by eliminating extra queries to the database.
• Enhance logging to correlate log messages with the associated participant id in multi-participant node tests and environments
• Ledger api server indexer closes akka system on shutdown.
• The ledger api server now stores divulged, otherwise unknown contracts.

Daml Visualization

• Adding daml damlc visual-web command. visual-command generates webpage with d3 network.

Daml Ledger Integration Kit

• The transaction service is now fully tested.
• The TTL for commands is now read from the configuration service.
• The contract key tests now live under a single test suite and are multi-node aware.

Daml Compiler

• Fix a problem where constraints of the form Template (Foo t) caused the compiler to suggest enabling the UndecidableInstances language extension.
• Generic template instantiations like template instance IouProposal = Proposal Iou now generate a type synonym type IouProposal = Proposal Iou that can be used in Daml. Before, they generated a newtype, which cannot be used anymore.
• Fixed a bug where damlc build sometimes did not find modules during typechecking even if they were present during parallel compilations.

Security

• Document how to verify the signature on release tarballs.