+changes in sbcl-0.6.11 relative to sbcl-0.6.10:
+* Martin Atzmueller pointed out that bugs #9 and #25 are gone in
+ current SBCL.
+* bug 34 fixed by Martin Atzmueller: dumping/loading instances works
+ better
+* fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
+ and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
+ types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
+* DESCRIBE now works on structure objects again.
+* Most function call argument type mismatches are now handled as
+ STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
+ know whether the function will be redefined before the call is
+ executed. (The compiler could flag local calls with full WARNINGs,
+ as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
+ it doesn't keep track of enough information to know whether calls
+ are local in this sense.)
+* Compiler output is now more verbose, with messages truncated
+ later than before. (There should be some supported way for users
+ to override the default verbosity, but I haven't decided how to
+ provide it yet, so this behavior is still controlled by the internal
+ SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
+ src/compiler/ir1util.lisp.)
+* Fasl file format version numbers have increased again, because
+ support for the Gray streams extension changes the layout of the
+ system's STREAM objects.
+* The Gray subclassable streams extension now works, thanks to a
+ patch from Martin Atzmueller.
+* The full LOAD-FOREIGN extension (not just the primitive
+ LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
+* The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
+ but like most other programs, it defaults to copying the Unix
+ environment from the original process instead of starting the
+ new process in an empty environment.
+* Extensions which manipulate the Unix environment now support
+ an :ENVIRONMENT keyword option which doesn't smash case or
+ do other bad things. The CMU-CL-style :ENV option is retained
+ for porting convenience.
+* LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
+ as per Daniel Barlow's suggestion and Martin Atzmueller's patch
+
+changes in sbcl-0.6.12 relative to sbcl-0.6.11:
+* incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
+ is no longer recognized. I apologize for this, because it was
+ listed in SB-EXT as a supported extension, but I found that
+ its existing behavior was poorly specified, as well as incorrectly
+ specified, and it looked like too much of a mess to straighten it
+ out. I have enough on my hands trying to get ANSI stuff to work..
+* many patches ported from CMU CL by Martin Atzmueller, with
+ half a dozen bug fixes in pretty-printing and the debugger, and
+ half a dozen others elsewhere
+* fixed bug 13: Floating point infinities are now supported again.
+ They might still be a little bit flaky, but thanks to bug reports
+ from Nathan Froyd and CMU CL patches from Raymond Toy they're not
+ as flaky as they were.
+* The --noprogrammer command line option is now supported. (Its
+ behavior is slightly different in detail from what the old man
+ page claimed it would do, but it's still appropriate under the
+ same circumstances that the man page talks about.)
+* The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
+ are now supported, and enabled by default. Thus, the compiler can
+ handle many floating point and complex operations much less
+ inefficiently. (Thus e.g. you can implement a complex FFT
+ without consing!)
+* The compiler now detects type mismatches between DECLAIM FTYPE
+ and DEFUN better, and implements CHECK-TYPE more correctly, and
+ SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
+ thanks to patches from Martin Atzmueller.
+* various fixes to make the cross-compiler more portable to
+ ANSI-conforming-but-different cross-compilation hosts (notably
+ Lispworks for Windows, following bug reports from Arthur Lemmens)
+* A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
+ ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
+ fixed thanks to Pierre Mai's CMU CL patches.
+* fixes to keep the system from overflowing internal counters when
+ it tries to use i/o buffers larger than 16M bytes
+* fixed bug 45a: Various internal functions required to support
+ complex special functions have been merged from CMU CL sources.
+ (When I was first setting up SBCL, I misunderstood a compile-time
+ conditional #-OLD-SPECFUN, and so accidentally deleted them.)
+* improved support for type intersection and union, fixing bug 12
+ (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
+ more obscure bugs as well
+* some steps toward byte-compiling non-performance-critical
+ parts of the system, courtesy of patches from Martin Atzmueller
+* Christophe Rhodes has made some debian packages of sbcl at
+ <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
+ From his sbcl-devel e-mail of 2001-04-08 they're not completely
+ stable, but are nonetheless usable. When he's ready, I'd be happy
+ to add them to the SourceForge "File Releases" section. (And if
+ anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
+* new fasl file format version number (because of changes in
+ internal representation of (OR ..) types to accommodate the new
+ support for (AND ..) types, among other things)
+
+changes in sbcl-0.6.13 relative to sbcl-0.6.12:
+* a port to the Alpha CPU, thanks to Dan Barlow
+* Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
+ patch, so that DISASSEMBLE output is much nicer.
+* better error handling in CLOS method combination, thanks to
+ Martin Atzmueller and Pierre Mai
+* Hash tables can be printed readably, as inspired by CMU CL code
+ of Eric Marsden and SBCL code of Martin Atzmueller.
+* a new slam.sh hack to shorten the edit/compile/debug cycle for
+ low-level changes to SBCL itself, and a new :SB-AFTER-XC-CORE
+ target feature to control the generation of the after-xc.core
+ file needed by slam.sh.
+* Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
+ is now a supported extension again, since the consensus is that
+ it can be useful for ordinary development work, not just for
+ debugging SBCL itself.
+?? more overflow fixes for >16Mbyte i/o buffers
+* minor incompatible change: The ENTRY-POINTS &KEY argument to
+ COMPILE-FILE is no longer supported, so that now every function
+ gets an entry point, so that block compilation looks a little
+ more like the plain vanilla ANSI section 3.2.2.3 scheme.
+