Release 6.6.1

• Fix issue (#429): the new license doesn't work if replace the old license with it in enable-period-mode
• Fix extension filenames conflict for multiple platforms in super mode
• Fix issue (#442): the target platforms in the runtime settings is read as a list
• Fix issue (#452): when enable suffix for super mode in Linux, the obfuscated scripts raise ImportError: dynamic module does not define module export function
• Fix issue (#460): the obfuscated scripts crash if they're obfucated by --advanced 2 and --obf-code 0
• Add new platforms: android.x86, android.x86_64