- equal hash table
- add support for continuations
- stack trace should limit output length, in particular when printing 
  sequences
- capture signal SIGKILL and then show backtrace before exiting
- make basic forms check for number of arguments *done
- better error reporting *now almost acceptable, reader still to improve
- symbols and symbol table *done
- dynamic handling of global vars (trough symbols?) *done
- simple copying garbage collector *seems to work
- garbage collector trace objects recursevly, if they are too deeply nested
  C's stack will overflow *solved
- test the garbage collector
- mkvec and mkstr don't initialize their elements *solved
- add support for floating point numbers *done
- add more floating point operations
- add generic operations that work with both fixnums and floats
- full let, with, withs, if syntax *done
- write a reader *work in progress, misses ssyntax
- make more abstract the generation of assembly code to easily switch to 
  other assemblers *done
- avoid creation of multiple constants that are eql *done
- dynamic loading and execution of compiled files *done
- allow primitive operations in non-operator position
- (car nil) and (cdr nil) should return nil, not an error *done
....