Docs give conflicting info about newlines in urlsafe_encode64 output

[fastjames]

I was reading the current rdocs for Base64, and in the Newlines section it says:

An encoded string returned by Base64.encode64 or Base64.urlsafe_encode64 has an embedded newline character after each 60-character sequence, and, if non-empty, at the end:

However, in the section for urlsafe_encode64 it says:

The returned string will have no newline characters, regardless of its length; see Newlines above:

I read the source and it looks like the method comment is correct, and the encoded output (because it uses #strict_encode64) will not contain newlines.

I will submit a pull request momentarily to update the docs.