phalcon#875: Swiftmailer and Twig are no longer required

Moved Swiftmailer and Twig to the Composer "suggest"

Merge pull request phalcon#876 from phalcon/3.4.x

3.4.2

Prevent session data from being re-persisted if closed or destroyed

Used latest stabe Phalcon

Merge pull request phalcon#851 from phalcon/3.3.x

3.3.0

Merge pull request phalcon#847 from phalcon/3.2.x

v3.2.6

Merge pull request phalcon#837 from phalcon/3.2.x

3.2.5

Merge pull request phalcon#834 from phalcon/3.2.x

3.2.4

Merge pull request phalcon#823 from phalcon/3.2.x

v3.2.3

Merge pull request phalcon#807 from phalcon/3.2.x

3.2.2