move parser declarations so parser.h

drop the in_body field and use a bit in the flags field

deal with BOM -- that is, ignore it

style(9)

drop funny characters at reading-time

refactor parsers: add parser_foreach_line to rule 'em all

fix a case of use-after-free in parser_set_buf p->buf and buf almost always overlap. This means that once we free(p->buf), buf becomes invalid. It probably never crashed on memcpy since because the buffer is almost always quite small.

move some parser utils to its own file