Release v2.4.0

[bigbes]

This release focuses on adding schema/user/session operations, synchronous transaction flag handling, and fixes watcher panic.

Added

• Implemented all box.schema.user operations requests and sugar interface (Added logic for working with Tarantool schema via Box #426).
• Implemented box.session.su request and sugar interface only for current session granting (Added logic for working with Tarantool schema via Box #426).
• Defined ErrConcurrentSchemaUpdate constant for "concurrent schema update" error (api: add a constant for "concurrent schema update" #404).
  Now you can check this error with errors.Is(err, tarantool.ErrConcurrentSchemaUpdate).
• Implemented support for IPROTO_IS_SYNC flag in stream transactions,
  added IsSync(bool) method for BeginRequest/CommitRequest (TNTP-3334: IPROTO_IS_SYNC support for begin/commit #447).

Fixed

• Fixed panic when calling NewWatcher() during reconnection or after
  connection is closed (Panic on NewWatcher() during reconnect #438).

[oleg-jukovec]

Oh, link to an issue is missed. Please, fix it in the release commit.