Update default template referencing to use the default since Symfony 3.4

Merge pull request #214 from collapso/master

Update default template referencing to use the default since Symfony 3.4

Improve fetch component query, use hash which is indexed in db.

Merge pull request #213 from shouze/perf-retrieve-component-with-index

perf: retrieve component by using indexed column

remove deprecated usage of getExtension

Merge pull request #211 from kesslerdev/patch-1

remove deprecated usage of getExtension

Go to PHP 7.1

Merge pull request #210 from core23/patch/doctrine

Added doctrine <2.6 to conflicts

Supports Symfony 4

Merge pull request #209 from tibineogen/symfony-4-support

update to support symfony 4

Fix tests and spread compiler pass without any spread.

v2.4.3

Remove php 5.3 tests on travis-ci.

Fix spread compiler pass.

Merge pull request #204 from 7thcubic/7thcubic-patch-2

Multiple spread classes failure to load

Fix dependency injection issue

Merge pull request #202 from pppdns/patch-1

Fixed fatal error in dependency injection config

Spread priorization via Symfony tag.

v2.4.0

Spread priorization.

Fix kernel extension

v2.3.2

Must get reference, not definition directly.