Release 0.7
 (20000217) - Added supported() function to check in a .if if a instruction is
              supported (From Lesha Bogdanow <boga@inbox.ru>).
            - Added checking of which mnemonic that work on the different AVRs
              (From Lesha Bogdanow <boga@inbox.ru>).
            - Added constants __DEVICE__, __FLASH_SIZE__, __RAM_SIZE__ and
              __EEPROM_SIZE__ (From Lesha Bogdanow <boga@inbox.ru>).
            - Added tiny devices (From Lesha Bogdanow <boga@inbox.ru>).
 (20000403) - Changed error on constant out of range into a warning.
 (20010918) - Added support for instructions: (E)LPM Rd,Z(+), SPM, ESPM, BREAK,
              MOVW, MULS, MULSU, FMUL, FMULS, FMULSU
            - Added support for new devices: ATmega8, ATmega16, ATmega32,
              ATmega128, ATmega162, ATmega163, ATmega323, AT94K
            - Added --devices switch to list all supported devices.
 (20010919) - Fixed bug in map file name when the name had more than one . (dot)
 (20010920) - Added option --includedirs to add additional include dirs in
              search path.
 (20010925) - Added support for creation of intel hex 32 files to be able to
              address memory above 64KB. Uses 02 records for addresses up to 1MB
              and 04 record for addresses above 1MB.

Release 0.6
 (20000124) - Added COFF support from Bob Harris <rth@McLean.Sparta.Com>

Release 0.5
 (19990331) - Bugfix: a inline string copy did not terminate string.
 (19990409) - Fixed bug causing --define symbol=value not to work.
 (19990418) - Added output of memory usage.
 (19990518) - Fixed bug when there was a { in a comment.
 (19990715) - Fixed count for data segment.
 (19990720) - Fix to make a forward referenced label in .db/.dw work.
 (19990922) - Added ATmega161 and ATtiny15 in list.
            - rjmp and rcall now wraps around with 4k word devices.
 (19991220) - Fixed bug when branching backwards with BRBS or BRBC
 
Release 0.4
 (19990202) - Added support for global keyword to use on labels in macros.
            - Fixed get_next_token to handle commas inside ' '
 (19990204) - Fixed bug when searching for correct macro_call, so recursive
              and nested macros will work.
            - Now handles commas in strings.
            - Added fix to handle semi colon in a string.
 (19990205) - Improved mnemonic parsing for ld and st
