FlashCast v1.1.1

This release fixes a Wi-Fi configuration bug and adds a few minor enhancements:

• Log files have been moved from flashcast-logs to a numbered directory inside flashcast-data in preparation for upcoming backup functionality.
• Wi-Fi AP creation now functions correctly in the case where a client connection was established but no DHCP lease could be obtained.
• The sed utility is now GNU's implementation rather than BusyBox's. This allows for embedded hexadecimal escape sequences for simple binary patching.
• Large temporary files can now be created by passing -l as the first argument to a new mktemp wrapper. See the documentation for more information.
• has_mod_option will no longer generate a (harmless) error in the log file when an options file is not passed to the mod.