* rename library folder to src

* updated changelog

* Require phpunit v6.5 and PHP v7

* Update tests to use TestCase

* Fix ClientTest tests

* Updated tests for phpunit v6.5

* Updated assertSame and removed copyright info from tests

* Fixed CS

* Removed php 5.6 from travis tests

* Added php 7.2 to travis

* Removed commented code

* Updated Readme

* Updated CHANGELOG

* Updated CS

* Updated tests and phpunit.dist{,.travis} (bootstrap.php is not needed anymore)

* Updated tests, removed unused coverage

finished first version of the Terms component and cleaned up some left overs from the component refactoring (#556)

Remove .idea

clean-up and phar support removal

Add gitattributes to exlude files from packaging (closes #548)

The "master" branch is now dedicated to solarium 4.x.
A new "3.x" branch was introduced to still maintain solarium 3.x (previously in master) with minimal bugfixes and security updates for some time, especially for people using older PHP or Solr versions.

* all components shpould be re-usable for custom query types and not be restricted for "select"

* cleaned-up QueryType\Select tests

* cleaned-up traits and introduced first interfaces to treat some components and query types indentically

* added a terms component

* fixed typos

Add a pagination example, see #521

The 3.x Suggester was in fact Spellcheck. the 4.x Suggester is a real Suggester now.

* run solr on travis

* use java 9

* fixed matrix

* added a first intergration test that select a result from the Solr techproducts example server

* added comment and dummy assertion to testPing()

Cleaned up suggester query and added missing parameters