Fixes #97 Adds environment:branch command.

[typhonius]

No description provided.

[codecov-io]

Codecov Report

Merging #128 into master will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master     #128      +/-   ##
============================================
+ Coverage     93.28%   93.29%   +0.01%     
- Complexity      346      347       +1     
============================================
  Files            30       30              
  Lines          1385     1388       +3     
============================================
+ Hits           1292     1295       +3     
  Misses           93       93              

Impacted Files	Coverage Δ	Complexity Δ
src/Commands/EnvironmentsCommand.php	98.88% <100.00%> (+0.03%)	23.00 <1.00> (+1.00)

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