Minor bug fixes: - Synchronizes multiple actions when requiring token refresh (#332) - Make handling of non-standard expires_at more tolerant (#336) - Changes related to Android tool changes between v25 and v27 (#341, #363) - Fix encoding of client ids and secrets for auth (#345) - Handle CustomTabsSession.newSession failures (#362) - Do not automatically pass scope on token exchange request (#364) - Do not override tab title setting (#365) - Respect default browser of the user correctly (#379) - Updated custom tab definitions, including Firefox (#378, #383)