0.9.0 - 2014-05-13
------------------

* More efficient implementation of variadic formatting functions.

* `Writer::Format` now has a variadic overload::

    Writer out;
    out.Format("Look, I'm {}!", "variadic");

* For efficiency and consistency with other overloads, variadic overload of
  the `Format` function now returns `Writer` instead of `std::string`.
  Use the `str` function to convert it to `std::string`::

    std::string s = str(Format("Look, I'm {}!", "variadic"));

* Replaced formatter actions with output sinks: `NoAction` -> `NullSink`,
  `Write` -> `FileSink`, `ColorWriter` -> `ANSITerminalSink`. This improves
  naming consistency and shouldn't affect client code unless these classes
  are used directly which should be rarely needed.

* Added `ThrowSystemError` function that formats a message and throws
  `SystemError` containing the formatted message and system-specific error
  description. For example, the following code::

    FILE *f = fopen(filename, "r");
    if (!f)
      ThrowSystemError(errno, "Failed to open file '{}'") << filename;

  will throw `SystemError` exception with description
  "Failed to open file '<filename>': No such file or directory" if file
  doesn't exist.

* Support for `AppVeyor <https://ci.appveyor.com/project/vitaut/cppformat>`_
  continuous integration platform.

* `Format` now throws `SystemError` in case of I/O errors.

* Improve test infrastructure. Print functions are now tested by redirecting
  the output to a pipe.

0.8.0 - 2014-04-14
------------------

* Initial release