make listener reusable

[renanbr]

fix #55

[codecov]

Codecov Report

Merging #61 into master will increase coverage by 0.02%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##             master      #61      +/-   ##
============================================
+ Coverage     90.36%   90.38%   +0.02%     
+ Complexity      176      175       -1     
============================================
  Files             9        9              
  Lines           467      468       +1     
============================================
+ Hits            422      423       +1     
  Misses           45       45

Impacted Files	Coverage Δ	Complexity Δ
src/Listener.php	100% <100%> (ø)	15 <0> (-1)	⬇️

---

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 44dc16b...8725e88. Read the comment docs.