Version 0.4.0

  * The process class has been redesigned and extended.

  * The basic_path class template has been redesigned and extended. The path
    representation now stores the directory trailing slash, if present.

  * The fdstream classes have been redesigned and extended.

  * A number of new filesystem manipulation functions have been added.

  * Add path::temp_directory(), path::temp_path() utility functions.

  * Add base64_encode(), base64_decode() utility functions.

  * Add portable ucase(), lcase(), casecmp(), alpha(), digit(), alnum().

  * The 'freebsd' target triplet class has been changed to 'bsd'.

Version 0.3.0

  * Add SHA256 hash calculator based on code from the FreeBSD project. That
    code is (naturally) licensed under the simplified/2-clause BSD license so
    the library is now MIT/BSD-licensed.

    Also add helper sha256_to_fingerprint() fingerprint_to_sha256() functions.

  * Add vector_view class template.

  * Add path::realize() (on POSIX calls realpath(3)), path::compare().

  * Recognize MSVC target triplet (*-microsoft-win32-msvcXX.Z).

  * Derive a target class from the target triplet for some targets. Currently
    the classes are: 'linux', 'macosx', 'freebsd', 'windows', and 'other'.

  * Add timestamp from_string().

  * Add combine_hash() utility function.

Version 0.2.0

  * First public release.