Enhancement: Synchronize with ergebnis/php-library-template

[localheinz]

This PR

• synchronizes with ergebnis/php-library-template

[codecov]

Codecov Report

Merging #85 into master will not change coverage by %.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #85   +/-   ##
=========================================
  Coverage     93.50%   93.50%           
  Complexity       75       75           
=========================================
  Files             8        8           
  Lines           200      200           
=========================================
  Hits            187      187           
  Misses           13       13           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 76a5d3c...265ad2a. Read the comment docs.