Fixed bugs:

• "2.225073858507201e-308" can't be converted to number. #144
• (regex "a/b") returns unreadable regex literal. #145
• (security keystore) with JKS or JCEKS has unbound variables.
• pid->process didn't work on Windows.
• Incorrect calculation of add-duration and subtract-duration has been fixed.

Improvements:

• Windows environment got stabler.
• Generating TZ database can be done with local files.
• Building OS X can be done without specifying libffi
• Calling outer loop inside of guard consumes less stack.
• Stabilised (net server).
• Thread specific value is available on threads created by (util concurent thread-pool).
• Native stack trace can be shown on Windows when Sagittarius is crashed.
• Native stack trace can be shown on POSIX environment when SEGV or other critical signal is raised.

New features:

• thread-pool-thread-task-running? has been added.
• Weak box has been added.
• Draft SRFI 123 has been added.
• Draft SRFI 124 has been added. The implementation does not comply the whole requirement.
• process-active? has been added.

New platform:

• OS X environment has been supported. Some of POSIX functionalities are not usable due to the limitation of OS X.