flat assembler 2 is here!

15 years late, but still fun. Get it from https://flatassembler.net/download.php The ideas for fasm 2 design presented on fasmcon 2009:    • fasmcon 2009 - Tomasz Grysztar: Ideas for ...   Corrections: 07:40 The aarch64 headers were made by tthsqe, not jacobly. My apologies for mixing them up.