SlyEdit: Open the quote file in "binary" mode (only applicable on Windows; same as the fseditor change)

SlyEdit: Open the quote file in "binary" mode (only applicable on Windows; same as the fseditor change)

From the fseditor commit message for this change: If the quote file contained a Ctrl-Z (ASCII 26) char, it would be truncated at that point. Some UTF-8 messages that include a "right arrow" unicode code point are translated to ASCII Ctrl-Z (ASCII 26) char, which is interpretted by Windows as "EOF" (end of file) marker for files open in "text mode" and the file won't be read beyond that char.