Message direction is automatically set if SmsProvider send or incoming methods.
Added new exception: \Drupal\sms\Exception\SmsDirectionException
An exception is thrown if message direction is missing when passed to SmsProvider::queue

Fixed dpi/smsframework#65

Introduces test utility methods for a incoming message storage buffer, similar to the pre-existing outgoing message buffer.

Fixed dpi/smsframework#64

Includes tests for validation exception messages.

It did not get removed with https://www.drupal.org/node/2788473 because it was named incorrectly

Removed submodules which no longer exist.
Updated information regarding hooks, which changed to events.

Issue #2707723 by dpi: Changing terminology and config keys to more accurately describe functions introduced by the register-account-via-sms feature.

Added test coverage for \Drupal\sms\Event\RecipientGatewayEvent
Add ID detect to createMemoryGateway so the id passed to settings is correct.

Fixed dpi/smsframework#47

createPhoneNumberSettings will now create form displays if they don't exist.

Fixed dpi/smsframework#44

Fixed dpi/smsframework#43

Issue #2776751 by dpi: Harmonise APIs for Entity\SmsMessageInterface and Message\SmsMessageInterface

Removed provider::queueIn()
Removed provider::queueOut()
Allowing standard messages on queue(), not just entity.
Promoted set/getDirection from message entity to common method.
Promoted direction tests to message trait, which enables coverage on both message classes.

Fixed dpi/smsframework#42

Issue #2643408 by dpi: Implement a more intelligent SMS Gateway selection mechanism for SMS Framework

Fixed dpi/smsframework#37

Behaviour change was introduced sometime between 2.8.4 (bundled with core) and 2.8.9 (latest).
New behaviour adds a trailing newline after '[username]'.
Changing the multiline string character fixes this trailing newline.

Fixed dpi/smsframework#41