Poison encode error

[jronmi]

** (Poison.EncodeError) unable to encode value: <<252, 110>>
lib/poison/encoder.ex:209: Poison.Encoder.BitString.chunk_size/3
lib/poison/encoder.ex:168: Poison.Encoder.BitString.escape/2
lib/poison/encoder.ex:122: Poison.Encoder.BitString.encode/2
lib/poison/encoder.ex:279: anonymous fn/4 in Poison.Encoder.Map.encode/3
lib/poison/encoder.ex:282: Poison.Encoder.Map."-encode/3-lists^foldl/2-0-"/3
lib/poison/encoder.ex:282: Poison.Encoder.Map.encode/3
lib/poison/encoder.ex:318: anonymous fn/3 in Poison.Encoder.List.encode/3
lib/poison/encoder.ex:319: Poison.Encoder.List."-encode/3-lists^foldr/2-1-"/3

[jronmi]

I found the perpetrating link after filtering through 1000 repos: https://github.com/eseraygun/python-alignment

[jronmi]

Error was being caused by unknown characters in a different UTF8 encoding. To fix it we added an additional processing in Git_module's get_contributors function