v0.4.0

Added

• Analytics reads that compare each rate with the previous period, give the
  sample size and a test of each change, and link example sessions and users
  to their actions and traces: analytics.overview.v4,
  analytics.properties.v3, analytics.funnel.v2, analytics.retention.v3,
  analytics.paths.v2 and analytics.segments.compare.v3.
• actions.list.v1 accepts session_id to read one example session.
• The registry entry has the LogBrew icon.

Changed

• execute describes which operations change data, which changes need a
  confirming call, and which calls are safe to repeat. search says that it
  never changes data. Every argument of both tools has a description.
• The operation reference is now part of the README.
• The server keeps one copy of the bearer token for each request.