MascOS 0.2.3

Ability to create and rename files, tested 2 games, reworked parallel ports driver and more.

Major changes

• Tested 2 games: DOS Defender, an Asteroids clone, and Floppy Bird. They work but since I don't have a joystick I can't fully test Dos Defender.
• Reworked parallel ports driver.
• Fixed touch command. Now you can create files and it writes changes to the disk.
• Added rename command.
• Added functions to write FAT and root directory to disk.
• Fixed .BIN programs not able to run.
• Revamped GetAttribute function(now it's useful).
• Fixed HI.COM not executing.
• run command is now faster.
• Now file extension gets checked before executing a program, only .COM and .BIN files are valid.

Minor changes

• Added int 0x21 Get interrupt vector and Set interrupt vector, with ah set to 0x25 and 0x35 respectively.
• Now strings can be terminated with a $ too, just like MS DOS.
• Now you don't need sudo permissions to compile the "stable" version.
• Now int 0x21 "Get system time" function returns seconds and hundredths.
• Fixed shell command buffer overflow.
• Fixed shell not updating arguments counter.
• Updated README.md.
• Improved code.
• Minor changes.