• any number of instructions sharing the argument, for example lda:cmp:req 20 (by @epi)
• read source from stdin, write object or listing to stdout (by @epi)

• local labels (contributed by @epi)
• fixed emitted bytes not shown in the listing after OPT L+ (by @epi)
• emit shorter code for moving a negative immediate value with MWX/MWY
• Windows binary signed
• macOS binary signed, notarized, installed in /usr/local/bin

Changed from 3.1.0:

• remove partial object file on error (requested by @billkendrick)
• report label name in the unused label warning (requested by @peterdell)
• support a:/f: modifiers for RUN/INI
• improved performance with network drives (reported by Marek Pavlik)

Changed from 3.0.2:

• OS X, Ubuntu and Fedora distributions
• INS can be repeated (suggested by Marek Pavlik) and taken "opcode" of
• OPT U- disables /u unused label warnings (suggested by Marek Pavlik)
• if the file to be included cannot be open, report error in the ICL line (suggested by @peterdell)
• removed duplicate filenames for /M
• implemented /p outside Windows
• source code updated from D1 to D2
• project moved to GitHub :)

• fixed "Branch out of range" error message - was overstated by 256 bytes for backward branches
• new command-line option /M prints a Makefile rule
• command-line options are now case-insensitive
• on Windows, error messages are printed in red, warnings in yellow

• fixed a bug in OPT H- mode
• made xasm compilable with the latest D compiler v1.010 (there were incompatible changes in the D language and library)

• rewritten from the x86 assembly language to the D programming language - Linux version is now available and DOS is no longer supported
• no limits on line length, number of ICLs, ORGs, IFTs and labels
• Unix-style command-line options are supported
• the /e option is removed
• the label table is now sorted alphabetically

• no more "Arithmetic overflow" and "Division by zero" errors for correct use of forward-referenced labels (bug found by @Jaskier)

• an error was reported in the following correct code:

   ift 0
  foo equ 1
   ift foo
   eif
   eif
  

  (bug found by @epi)

• errors for non-existing INC @ and DEC @

• negative numbers fixed in the listing

• long file names are supported under Windows
• support for code relocated at runtime
• line repeat counter
• label values are now 32-bit, not just 17-bit
• command-line options /n and /s are no longer supported
• fatal I/O errors no longer print the annoying "Abort, Retry, Ignore" message

• version 2.5.1 broke Unix EOLs - fixed
• version 2.5.1 omitted all blank/comment/label lines, unless /c was used