??.??.20??: Rhialto
        version 0.6:

25.04.2020: Rhialto
        version 0.5:
        - Fixed bug with checking addressing mode for JSR and bugs
          with .REPT 0, unneeded relocation on pc-relative mode.
        - Very simple .LIST and .NLIST implementation.
        - Add ^pl and ^ph expressions from 2.11BSD's m11.
        - Object-ified macro libraries with an eye to support the .sml
          files from 2.11BSD's m11. But since the given file does not 
          just contain .MACROs (it even contains conditionals) I'm not
          sure how it is supposed to work.
        - Added 2.11BSD/m11 as test files. To make this reasonable, a
          few small features they use have been recognized and ignored.
        - Add -rsx and -rt11 to switch object file format (from Kevin Handy)
        - Add obj2bin from https://github.com/AK6DN/obj2bin.git

09.11.2015: Rhialto
        version 0.4:
        - Fixed various bugs. The most notable was extensive use-
          after-free in the expression tree, which crashed on NetBSD but
          apparently not on other  systems.
        - Lots of changes to make this MACRO11 more like the MACRO11 of
          RSX-11M+ 4.6. I used Kermit-11 source files for comparison.
          "The Manual" I'm refering to is
          AA-KX10A-TC_PDP-11_MACRO-11_Reference_Manual_May88.pdf at
          www.bitsavers.org/pdf/dec/pdp11/rsx11/RSX11Mplus_V4.x/4a/ and
          I use an installed system to double-check.

----------- Joerg Hoppe's entries ------------------

19.4.2009: JH
        version 0.3
        - bugfix: Illegal labels and illegal opcodes are processed as
          "implied .WORD" directives.
          Expression errors in "do_word()" did not process any input character,
          so parser did go into an endless loop.
        - Switchable syntax extensions with -yxx options:
          symbol len can be adjusted with "-ysl" command line option.
          "-yus" option allows underscore "_" char in symbols.
          This was needed to process code generated by my favorite disassembler.
        - command line help added (-h option)

17.4.2009: JH
        version 0.3
        - ".INCLUDE" re-enabled
        - refactoring: big 6000+ lines "macro11.c" split into 10 modules.

15.4.2009: JH
        Begin rework by Joerg Hoppe (j_hoppe@t-online.de)
        All my changes are marked with "/*JH: .. */" comments


----------- Richard Krebiehls entries ------------------


15-July-2001
        version 0.2
        removed references to snprintf from dumpobj.c and
        mlb.c for portability
        fixed a type cast warning in dumpobj.c compare_gsdlines
        Removed strcasecmp from macro11.c for portability
        Removed references to wnewmem.c from makefile (isn't needed)
        makefile more compatible with non-gnu make and compiler
        main prints version 0.2

14-July-2001
        First release, version 0.1.