* Check if ros is ok before init or shutdown

* Add PredicatesListener and ServiceClient as C++ classes

* Add C++ tests with available fixtures

* Update CMakeLists and package.xml

* 2.2.0 -> 2.2.1

* Update CHANGELOG

* Set future of PredicatesListener directly in subscription

* Clean package and CMakeLists of modulo components

* Update and add tests for triggers

* Update and add tests for services

* Rename random state to random pose

* Add missing tests

* 2.2.1 -> 2.2.2

* Update CHANGELOG

* Small fix

* Add publish_manually flag to output creation

* Add helper to publish a manual output

* Test addition and publishing of non-periodic outputs

* Test non-periodic outputs communication

* Update CHANGELOG

* Change from publish_manually to publish_on_step

* Add everything in Python too

* Fix typo

* Add missing tests

* 2.2.2 -> 2.2.3

* Add overloaded method for adding empty parameters

* Add tests

* 2.2.3 -> 2.2.4

* Update CHANGELOG

* Revert "Add overloaded method for adding empty parameters (#25)"

This reverts commit 0c4605a.

* 2.2.3 -> 2.2.5

* Reformat modulo components

* Reomve empty source file

* Reformat modulo core

* 2.2.5 -> 2.2.6

* Update CHANGELOG

* Add and install component descriptions

* 2.2.6 -> 2.2.7

* Update CHANGELOG

* Reword parameter description

---------

Co-authored-by: Enrico Eberhard <32450951+eeberhard@users.noreply.github.com>

Co-authored-by: Enrico Eberhard <32450951+eeberhard@users.noreply.github.com>
Co-authored-by: Dominic Reber <71256590+domire8@users.noreply.github.com>