New 20181028 firmware and MegaDrumManagerFX versions released

The latest MegaDrumManagerFX version is now 20181028. This version is required to support Noise Filtering introduced in the firmware version 20181028.

In this version:
1. A new setting called Noise Filter Level was added in Misc settings. This is to support the new setting in the latest MegaDrum firmware version. Default is set to 5. Level 0 corresponds to old default noise filtering. This setting is only effective on STM32F205 based MegaDrum.