Escape character can disappear in Copyable to base64 compression

[mat1jaczyyy]

@Brendonovich

Pasting some base64-encoded compressed data into messaging apps can make the \ character disappear, as it's considered escaping. This messes up pasting. Should avoid this character.

Example pasted on GitHub:

QVBPTB8AAAABAQAAAAUAAQcCAAAAB{A6}DQnVnAQ{A26}BAEAAAAFAQEKHQEbBQAAAOgD{A:}DwPw{A5}JAAAAGT8AABk/IgAZPT8AGQwqABkAHj8ZCAA/GT0APxk/ACYZ{A>}CgGi/dJAbBP6AaL90kBtE/76fGSzeJ2T+gGi/dJAbhP3E9CtejcOU/76fGSzeJ6T+XbhKDwMrtPw{A7}PA/{A\}BEZhZGUB{A27}B{A6}==

QVBPTB8AAAABAQAAAAUAAQcCAAAAB{A6}DQnVnAQ{A26}BAEAAAAFAQEKHQEbBQAAAOgD{A:}DwPw{A5}JAAAAGT8AABk/IgAZPT8AGQwqABkAHj8ZCAA/GT0APxk/ACYZ{A>}CgGi/dJAbBP6AaL90kBtE/76fGSzeJ2T+gGi/dJAbhP3E9CtejcOU/76fGSzeJ6T+XbhKDwMrtPw{A7}PA/{A}BEZhZGUB{A27}B{A6}==