v0.13.5

Sandbox

• Introduced a new API for package management.
  See [#1311].
• Fixed a bug in migration scripts that could cause databases originally created with older versions of the Sandbox to not upgrade schemas properly.
  See [#1682].

Java Codegen

• Support generic types (including tuples) as contract keys in codegen.
  See [#1728].

Ledger API

• A new command ExerciseByKey allows to exercise choices on active contracts referring to them by their key.
  See [#1366].

Java Bindings

• The addition of the ExerciseByKey to the Ledger API is reflected in the bindings.
  See [#1366].
• Release the Java Bindings to the public Maven Central repository. To move to using the Maven Central repository, remove the <repository>...</repository> and <pluginRepository>...</pluginRepository> blocks from Maven POM files that use version 0.13.5 (or later) of the Java Bindings.
  See [#1205].

DAML Studio

• Closing and reopening scenario results will now show the results
  instead of an empty view.
  See [#1606].
• The IDE now executes tasks in parallel.

Docs

• Added 'An introduction to DAML'.
• Added 'Visualizing DAML Contracts'.

Language

• Add an instance for IsParties (Optional Party), allowing Optional values to be used in signatory, observer and maintainer clauses.