Release 0.9.14

TLS support enhancements

Now you can write a TLS server. See tls-bind, tls-accept, tls-load-certificate and tls-load-private-key. (tls-load-object was obsoleted). Gauche-makiki supports https.
tls-poll is added.
Fixed a bug that truncated large messages.

As previously announced, we no longer support AxTLS. You need MbedTLS to use TLS. If MbedTLS library is installed in your system, Gauche automatically finds it. Alternatively, you can configure Gauche so that it downloads MbedTLS during build and compiled into libgauche.

`format` enhancements

Conditional directive ~[...~;....~] is supported. (format).
If a format string is a literal string, it is only parsed and 'compiled' once when it is first called. See Caching formatter procedure.

Native encoding is always UTF-8

As previously announced, we dropped eucjp, sjis and none internal encoding. You can still use eucjp, sjis or latin-1 in code and data. It's just converted to utf-8 internally. See Utf8Only for the details.

Other additions and improvements

srfi.194 (Random data generators): Added.
data.random: Added complexes-rectangular$, complexes-polar$.
gauche.charconv: Now supports utf8bom encoding for input, which drops the optional BOM at the beginning of utf8 stream. See the discussion in Issue:966.
gauche.threads: A macro run-once: guarantee to evaluate expression once, even in multithreaded environment.
Module query procedures: module-exports?, module-binds?, module-binding-ref. The latter two supersedes global-variable-bound? and global-variable-ref (Issue:963).
gauche-package - new info command to show info of installed packages.
text.multicolumn: display-multicolumn accepts :indent keyword argument.
data.priority-map: Added dict->priority-map, alist->priority-map. The key comparator of priority map now doesn't need to have a hash procedure.
file.util:
- remove-directory* now accepts :if-does-not-exist keyword argument.
- build-path now accepts symbols cwd and cld as the base-path argument. The latter stands for "current load directory".
control.pmap: Ensure fully-concurrent mapper terminates threads when timeout reached. Issue:964.
absolute-time: Added. Handy to canonicalize timeout argument.
On Windows, we use fast lock when possible (contributed by @Hamayama, Issue:955).

Bug fixes

Fix log, real-ln losing precision when a large bignum is given (Issue:980).
data.random: reals-between$ didn't work properly.
regexp-replace: Avoid rebinging current-output-port (Issue:967).
Prevent loading all available srfis when you load SLIB (Issue:960).
srfi.74: Fix blob-*-set! procedures.