0.19

• Use single thread for async event reader.
• Patch timeout handling for event polling this was not working correctly.
• Add unix support for more key combinations mainly complex ones with ALT/SHIFT/CTRL.
• Derive PartialEq and Eq for ContentStyle
• Fix windows resize event size, this used to be the buffer size but is screen size now.
• Change Command::ansi_code to Command::write_ansi, this way the ansi code will be written to given formatter.