+Changes in 2.0.5 (since 2.0.4):
+
+This release fixes the binary interface information (SONAME) of
+libguile, which was incorrect in 2.0.4. It does not contain other
+changes.
+
+\f
+Changes in 2.0.4 (since 2.0.3):
+
+* Notable changes
+
+** Better debuggability for interpreted procedures.
+
+Guile 2.0 came with a great debugging experience for compiled
+procedures, but the story for interpreted procedures was terrible. Now,
+at least, interpreted procedures have names, and the `arity' procedure
+property is always correct (or, as correct as it can be, in the presence
+of `case-lambda').
+
+** Support for cross-compilation.
+
+One can now use a native Guile to cross-compile `.go' files for a
+different architecture. See the documentation for `--target' in the
+"Compilation" section of the manual, for information on how to use the
+cross-compiler. See the "Cross building Guile" section of the README,
+for more on how to cross-compile Guile itself.
+
+** The return of `local-eval'.
+
+Back by popular demand, `the-environment' and `local-eval' allow the
+user to capture a lexical environment, and then evaluate arbitrary
+expressions in that context. There is also a new `local-compile'
+command. See "Local Evaluation" in the manual, for more. Special
+thanks to Mark Weaver for an initial implementation of this feature.
+
+** Fluids can now have default values.
+
+Fluids are used for dynamic and thread-local binding. They have always
+inherited their values from the context or thread that created them.
+However, there was a case in which a new thread would enter Guile, and
+the default values of all the fluids would be `#f' for that thread.
+
+This has now been fixed so that `make-fluid' has an optional default
+value for fluids in unrelated dynamic roots, which defaults to `#f'.
+
+** Garbage collector tuning.
+
+The garbage collector has now been tuned to run more often under some
+circumstances.
+
+*** Unmanaged allocation
+
+The new `scm_gc_register_allocation' function will notify the collector
+of unmanaged allocation. This will cause the collector to run sooner.
+Guile's `scm_malloc', `scm_calloc', and `scm_realloc' unmanaged
+allocators eventually call this function. This leads to better
+performance under steady-state unmanaged allocation.
+
+*** Transient allocation
+
+When the collector runs, it will try to record the total memory
+footprint of a process, if the platform supports this information. If
+the memory footprint is growing, the collector will run more frequently.
+This reduces the increase of the resident size of a process in response
+to a transient increase in allocation.
+
+*** Management of threads, bignums
+
+Creating a thread will allocate a fair amount of memory. Guile now does
+some GC work (using `GC_collect_a_little') when allocating a thread.
+This leads to a better memory footprint when creating many short-lived
+threads.
+
+Similarly, bignums can occupy a lot of memory. Guile now offers hooks
+to enable custom GMP allocators that end up calling
+`scm_gc_register_allocation'. These allocators are enabled by default
+when running Guile from the command-line. To enable them in libraries,
+set the `scm_install_gmp_memory_functions' variable to a nonzero value
+before loading Guile.
+
+** SRFI-39 parameters are available by default.
+
+Guile now includes support for parameters, as defined by SRFI-39, in the
+default environment. See "Parameters" in the manual, for more
+information. `current-input-port', `current-output-port', and
+`current-error-port' are now parameters.
+
+** Add `current-warning-port'.
+
+Guile now outputs warnings on a separate port, `current-warning-port',
+initialized to the value that `current-error-port' has on startup.
+
+** Syntax parameters.
+
+Following Racket's lead, Guile now supports syntax parameters. See
+"Syntax parameters" in the manual, for more.
+
+Also see Barzilay, Culpepper, and Flatt's 2011 SFP workshop paper,
+"Keeping it Clean with syntax-parameterize".
+
+** Parse command-line arguments from the locale encoding.
+
+Guile now attempts to parse command-line arguments using the user's
+locale. However for backwards compatibility with other 2.0.x releases,
+it does so without actually calling `setlocale'. Please report any bugs
+in this facility to bug-guile@gnu.org.
+
+** One-armed conditionals: `when' and `unless'
+
+Guile finally has `when' and `unless' in the default environment. Use
+them whenever you would use an `if' with only one branch. See
+"Conditionals" in the manual, for more.
+
+** `current-filename', `add-to-load-path'
+
+There is a new form, `(current-filename)', which expands out to the
+source file in which it occurs. Combined with the new
+`add-to-load-path', this allows simple scripts to easily add nearby
+directories to the load path. See "Load Paths" in the manual, for more.
+
+** `random-state-from-platform'
+
+This procedure initializes a random seed using good random sources
+available on your platform, such as /dev/urandom. See "Random Number
+Generation" in the manual, for more.
+
+** Warn about unsupported `simple-format' options.
+
+The `-Wformat' compilation option now reports unsupported format options
+passed to `simple-format'.
+
+** Manual updates
+
+Besides the sections already mentioned, the following manual sections
+are new in this release: "Modules and the File System", "Module System
+Reflection", "Syntax Transformer Helpers", and "Local Inclusion".
+
+* New interfaces
+
+** (ice-9 session): `apropos-hook'
+** New print option: `escape-newlines', defaults to #t.
+** (ice-9 ftw): `file-system-fold', `file-system-tree', `scandir'
+** `scm_c_value_ref': access to multiple returned values from C
+** scm_call (a varargs version), scm_call_7, scm_call_8, scm_call_9
+** Some new syntax helpers in (system syntax)
+
+Search the manual for these identifiers and modules, for more.
+
+* Build fixes
+
+** FreeBSD build fixes.
+** OpenBSD compilation fixes.
+** Solaris 2.10 test suite fixes.
+** IA64 compilation fix.
+** MinGW build fixes.
+** Work around instruction reordering on SPARC and HPPA in the VM.
+** Gnulib updates: added `dirfd', `setenv' modules.
+
+* Bug fixes
+
+** Add a deprecated alias for $expt.
+** Add an exception printer for `getaddrinfo-error'.
+** Add deprecated shim for `scm_display_error' with stack as first argument.
+** Add warnings for unsupported `simple-format' options.
+** Allow overlapping regions to be passed to `bytevector-copy!'.
+** Better function prologue disassembly
+** Compiler: fix miscompilation of (values foo ...) in some contexts.
+** Compiler: fix serialization of #nil-terminated lists.
+** Compiler: allow values bound in non-tail let expressions to be collected.
+** Deprecate SCM_ASRTGO.
+** Document invalidity of (begin) as expression; add back-compat shim.
+** Don't leak file descriptors when mmaping objcode.
+** Empty substrings no longer reference the original stringbuf.
+** FFI: Fix `set-pointer-finalizer!' to leave the type cell unchanged.
+** FFI: Hold a weak reference to the CIF made by `procedure->pointer'.
+** FFI: Hold a weak reference to the procedure passed to `procedure->pointer'.
+** FFI: Properly unpack small integer return values in closure call.
+** Fix R6RS `fold-left' so the accumulator is the first argument.
+** Fix bit-set*! bug from 2005.
+** Fix bug in `make-repl' when `lang' is actually a <language>.
+** Fix bugs related to mutation, the null string, and shared substrings.
+** Fix <dynwind> serialization.
+** Fix erroneous check in `set-procedure-properties!'.
+** Fix generalized-vector-{ref,set!} for slices.
+** Fix error messages involving definition forms.
+** Fix primitive-eval to return #<unspecified> for definitions.
+** HTTP: Extend handling of "Cache-Control" header.
+** HTTP: Fix qstring writing of cache-extension values
+** HTTP: Fix validators for various list-style headers.
+** HTTP: Permit non-date values for Expires header.
+** HTTP: `write-request-line' writes absolute paths, not absolute URIs.
+** Hack the port-column of current-output-port after printing a prompt.
+** Make sure `regexp-quote' tests use Unicode-capable string ports.
+** Peval: Fix bugs in the new optimizer.
+** Statistically unique marks and labels, for robust hygiene across sessions.
+** Web: Allow URIs with empty authorities, like "file:///etc/hosts".
+** `,language' at REPL sets the current-language fluid.
+** `primitive-load' returns the value(s) of the last expression.
+** `scm_from_stringn' always returns unique strings.
+** `scm_i_substring_copy' tries to narrow the substring.
+** i18n: Fix gc_malloc/free mismatch on non-GNU systems.
+
+\f
+Changes in 2.0.3 (since 2.0.2):
+
+* Speed improvements
+
+** Guile has a new optimizer, `peval'.
+
+`Peval' is a partial evaluator that performs constant folding, dead code
+elimination, copy propagation, and inlining. By default it runs on
+every piece of code that Guile compiles, to fold computations that can
+happen at compile-time, so they don't have to happen at runtime.
+
+If we did our job right, the only impact you would see would be your
+programs getting faster. But if you notice slowdowns or bloated code,
+please send a mail to bug-guile@gnu.org with details.
+
+Thanks to William R. Cook, Oscar Waddell, and Kent Dybvig for inspiring
+peval and its implementation.
+
+You can see what peval does on a given piece of code by running the new
+`,optimize' REPL meta-command, and comparing it to the output of
+`,expand'. See "Compile Commands" in the manual, for more.
+
+** Fewer calls to `stat'.
+
+Guile now stats only the .go file and the .scm file when loading a fresh
+compiled file.
+
+* Notable changes
+
+** New module: `(web client)', a simple synchronous web client.
+
+See "Web Client" in the manual, for more.
+
+** Users can now install compiled `.go' files.
+
+See "Installing Site Packages" in the manual.
+
+** Remove Front-Cover and Back-Cover text from the manual.
+
+The manual is still under the GNU Free Documentation License, but no
+longer has any invariant sections.
+
+** More helpful `guild help'.
+
+`guild' is Guile's multi-tool, for use in shell scripting. Now it has a
+nicer interface for querying the set of existing commands, and getting
+help on those commands. Try it out and see!
+
+** New macro: `define-syntax-rule'
+
+`define-syntax-rule' is a shorthand to make a `syntax-rules' macro with
+one clause. See "Syntax Rules" in the manual, for more.
+
+** The `,time' REPL meta-command now has more precision.
+
+The output of this command now has microsecond precision, instead of
+10-millisecond precision.
+
+** `(ice-9 match)' can now match records.
+
+See "Pattern Matching" in the manual, for more on matching records.
+
+** New module: `(language tree-il debug)'.
+
+This module provides a tree-il verifier. This is useful for people that
+generate tree-il, usually as part of a language compiler.
+
+** New functions: `scm_is_exact', `scm_is_inexact'.
+
+These provide a nice C interface for Scheme's `exact?' and `inexact?',
+respectively.
+
+* Bugs fixed
+
+See the git log (or the ChangeLog) for more details on these bugs.
+
+** Fix order of importing modules and resolving duplicates handlers.
+** Fix a number of bugs involving extended (merged) generics.
+** Fix invocation of merge-generics duplicate handler.
+** Fix write beyond array end in arrays.c.
+** Fix read beyond end of hashtable size array in hashtab.c.
+** (web http): Locale-independent parsing and serialization of dates.
+** Ensure presence of Host header in HTTP/1.1 requests.
+** Fix take-right and drop-right for improper lists.
+** Fix leak in get_current_locale().
+** Fix recursive define-inlinable expansions.
+** Check that srfi-1 procedure arguments are procedures.
+** Fix r6rs `map' for multiple returns.
+** Fix scm_tmpfile leak on POSIX platforms.
+** Fix a couple of leaks (objcode->bytecode, make-boot-program).
+** Fix guile-lib back-compatibility for module-stexi-documentation.
+** Fix --listen option to allow other ports.
+** Fix scm_to_latin1_stringn for substrings.
+** Fix compilation of untyped arrays of rank not 1.
+** Fix unparse-tree-il of <dynset>.
+** Fix reading of #||||#.
+** Fix segfault in GOOPS when class fields are redefined.
+** Prefer poll(2) over select(2) to allow file descriptors above FD_SETSIZE.
+
+\f
+Changes in 2.0.2 (since 2.0.1):
+
+* Notable changes
+
+** `guile-tools' renamed to `guild'
+
+The new name is shorter. Its intended future use is for a CPAN-like
+system for Guile wizards and journeyfolk to band together to share code;
+hence the name. `guile-tools' is provided as a backward-compatible
+symbolic link. See "Using Guile Tools" in the manual, for more.
+
+** New control operators: `shift' and `reset'
+
+See "Shift and Reset" in the manual, for more information.
+
+** `while' as an expression
+
+Previously the return value of `while' was unspecified. Now its
+values are specified both in the case of normal termination, and via
+termination by invoking `break', possibly with arguments. See "while
+do" in the manual for more.
+
+** Disallow access to handles of weak hash tables
+
+`hash-get-handle' and `hash-create-handle!' are no longer permitted to
+be called on weak hash tables, because the fields in a weak handle could
+be nulled out by the garbage collector at any time, but yet they are
+otherwise indistinguishable from pairs. Use `hash-ref' and `hash-set!'
+instead.
+
+** More precision for `get-internal-run-time', `get-internal-real-time'
+
+On 64-bit systems which support POSIX clocks, Guile's internal timing
+procedures offer nanosecond resolution instead of the 10-millisecond
+resolution previously available. 32-bit systems now use 1-millisecond
+timers.
+
+** Guile now measures time spent in GC
+
+`gc-stats' now returns a meaningful value for `gc-time-taken'.
+
+** Add `gcprof'
+
+The statprof profiler now exports a `gcprof' procedure, driven by the
+`after-gc-hook', to see which parts of your program are causing GC. Let
+us know if you find it useful.
+
+** `map', `for-each' and some others now implemented in Scheme
+
+We would not mention this in NEWS, as it is not a user-visible change,
+if it were not for one thing: `map' and `for-each' are no longer
+primitive generics. Instead they are normal bindings, which can be
+wrapped by normal generics. This fixes some modularity issues between
+core `map', SRFI-1 `map', and GOOPS.
+
+Also it's pretty cool that we can do this without a performance impact.
+
+** Add `scm_peek_byte_or_eof'.
+
+This helper is like `scm_peek_char_or_eof', but for bytes instead of
+full characters.
+
+** Implement #:stop-at-first-non-option option for getopt-long
+
+See "getopt-long Reference" in the manual, for more information.
+
+** Improve R6RS conformance for conditions in the I/O libraries
+
+The `(rnrs io simple)' module now raises the correct R6RS conditions in
+error cases. `(rnrs io ports)' is also more correct now, though it is
+still a work in progress.
+
+** All deprecated routines emit warnings
+
+A few deprecated routines were lacking deprecation warnings. This has
+been fixed now.
+
+* Speed improvements
+
+** Constants in compiled code now share state better
+
+Constants with shared state, like `("foo")' and `"foo"', now share state
+as much as possible, in the entire compilation unit. This cuts compiled
+`.go' file sizes in half, generally, and speeds startup.
+
+** VLists: optimize `vlist-fold-right', and add `vhash-fold-right'
+
+These procedures are now twice as fast as they were.
+
+** UTF-8 ports to bypass `iconv' entirely
+
+This reduces memory usage in a very common case.
+
+** Compiler speedups
+
+The compiler is now about 40% faster. (Note that this is only the case
+once the compiler is itself compiled, so the build still takes as long
+as it did before.)
+
+** VM speed tuning
+
+Some assertions that were mostly useful for sanity-checks on the
+bytecode compiler are now off for both "regular" and "debug" engines.
+This together with a fix to cache a TLS access and some other tweaks
+improve the VM's performance by about 20%.
+
+** SRFI-1 list-set optimizations
+
+lset-adjoin and lset-union now have fast paths for eq? sets.
+
+** `memq', `memv' optimizations
+
+These procedures are now at least twice as fast than in 2.0.1.
+
+* Deprecations
+
+** Deprecate scm_whash API
+
+`scm_whash_get_handle', `SCM_WHASHFOUNDP', `SCM_WHASHREF',
+`SCM_WHASHSET', `scm_whash_create_handle', `scm_whash_lookup', and
+`scm_whash_insert' are now deprecated. Use the normal hash table API
+instead.
+
+** Deprecate scm_struct_table
+
+`SCM_STRUCT_TABLE_NAME', `SCM_SET_STRUCT_TABLE_NAME',
+`SCM_STRUCT_TABLE_CLASS', `SCM_SET_STRUCT_TABLE_CLASS',
+`scm_struct_table', and `scm_struct_create_handle' are now deprecated.
+These routines formed part of the internals of the map between structs
+and classes.
+
+** Deprecate scm_internal_dynamic_wind
+
+The `scm_t_inner' type and `scm_internal_dynamic_wind' are deprecated,
+as the `scm_dynwind' API is better, and this API encourages users to
+stuff SCM values into pointers.
+
+** Deprecate scm_immutable_cell, scm_immutable_double_cell
+
+These routines are deprecated, as the GC_STUBBORN API doesn't do
+anything any more.
+
+* Manual updates
+
+Andreas Rottman kindly transcribed the missing parts of the `(rnrs io
+ports)' documentation from the R6RS documentation. Thanks Andreas!
+
+* Bugs fixed
+
+** Fix double-loading of script in -ds case
+** -x error message fix
+** iconveh-related cross-compilation fixes
+** Fix small integer return value packing on big endian machines.
+** Fix hash-set! in weak-value table from non-immediate to immediate
+** Fix call-with-input-file & relatives for multiple values
+** Fix `hash' for inf and nan
+** Fix libguile internal type errors caught by typing-strictness==2
+** Fix compile error in MinGW fstat socket detection
+** Fix generation of auto-compiled file names on MinGW
+** Fix multithreaded access to internal hash tables
+** Emit a 1-based line number in error messages
+** Fix define-module ordering
+** Fix several POSIX functions to use the locale encoding
+** Add type and range checks to the complex generalized vector accessors
+** Fix unaligned accesses for bytevectors of complex numbers
+** Fix '(a #{.} b)
+** Fix erroneous VM stack overflow for canceled threads
+
+\f