Add a changelog

ChangeLog.rst

@@ -0,0 +1,45 @@
+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