Error decoding Base32

[alessionossa]

When I try decoding Base32 string C7LU2YLHZMWMMAOA2XGIE6NIHFXRN25FRXAUUIFP5LXVTJGW4ICQ==== I get a DecodingError.

The string has no issues and get decoded correctly by other decoders:

This is related to #30 , in fact it gets decoded without errors when final "====" is removed.

[adam-fowler]

fixed and in v1.0