Merge branch '8.x-3.x' of bitbucket.org:messageagency/sf into 2899460

composer.json

config/install/salesforce.settings.yml

config/schema/salesforce.schema.yml

salesforce.info.yml

salesforce.install

salesforce.permissions.yml

salesforce.services.yml

src/Client/HttpClientWrapper.php

src/Consumer/OAuthCredentials.php

src/Consumer/SalesforceCredentials.php

src/Consumer/SalesforceCredentialsInterface.php

src/Entity/SalesforceAuthConfig.php

src/Plugin/SalesforceAuthProvider/SalesforceOAuthPlugin.php

src/Rest/RestClient.php

src/SalesforceAuthProviderInterface.php

src/SalesforceAuthProviderPluginBase.php

src/SalesforceAuthProviderPluginInterface.php

src/SalesforceAuthProviderPluginManager.php

src/SalesforceOAuthPluginInterface.php

src/Storage/SalesforceAuthTokenStorage.php