higher operator precedence of try

[shawnl]

It is not even documented in the precedence table https://ziglang.org/documentation/master/#Precedence

/home/shawn/git/zig/std/base64.zig:130:89: error: bit shifting operation expected integer type, found /home/shawn/git/zig/std/base64.zig:130:89: error: bit shifting operation expected integer type, found '@typeOf(base64.Base64Decoder.charToIndex).ReturnType.ErrorSet!u6'
                dest[dest_cursor + 0] = try decoder.charToIndex(source[src_cursor + 0]) << 2 | try decoder.charToIndex(source[src_cursor + 1]) >> 4;
                                                                                        ^

[andrewrk]

This will be resolved by #114