M2000 v0.9.6

What has changed in this version:

• Serial port support;
  Available through command-line argument like e.g. M2000 --serial COM7;
• Added option for 10x (1000%) CPU speed;
• Support for emulating @ifilot's SD-card cartridge;
  Targeted at developers of SD-card Launcher firmware;

Full Changelog: v0.9.5...0.9.6