prepare for 2.1.0

[jonabc]

2.1.0 - 2019-04-16

Added

• New Gradle dependency source enumerator (:tada: @dbussink Add support for Gradle for Java to manage licenses #150, @jandersson-svt Handle plugins block and empty url in gradle source #159)
• Metadata added to distributed packages (Include dependency license data in distributed packages #160)

Changes

• Bundler dependency source loads license key from a gem's cached gemspec file as a fallback (Load license key from bundler specification loaded_from as fallback #154)
• Licensed will only raise errors on an empty dependency path when caching records (Don't raise errors on empty dependency paths unless caching records #149)

Fixed

• Migrating to v2 will no longer crash trying to migrate cached records that don't exist (Fix v2 migration when sources is not explicit set #148)
• Reported warnings will no longer crash licensed when caching records (Fix warnings reporting #147)