Replace forbidden chars derived from branch name

[crazy-max]

Fixes #29

[codecov]

Codecov Report

Merging #31 (2b9bd58) into master (3ae5afe) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master      #31   +/-   ##
=======================================
  Coverage   71.91%   71.91%           
=======================================
  Files           3        3           
  Lines          89       89           
  Branches       20       20           
=======================================
  Hits           64       64           
  Misses          6        6           
  Partials       19       19           

Impacted Files	Coverage Δ
src/meta.ts	73.13% <100.00%> (ø)

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