Log Message:
Update to 0.40

Changelog:
0.40:
 * Added caption support.
 * Improved command line interoperability on Windows.
 * Fixed directory deletion short circuiting processing the rest of a commit.
 * Fixed issue loading non-ascii user image filenames on windows.
 * Ignore UTF-8 byte order mark at the start of lines in custom log files.
 * Fix to boost macros for Macs and non-GNU systems (mistydemeo).
 * Autotools improvements (flameeyes).

0.39:
 * Fixed blurry non power of 2 logos.
 * File colour changes now supported in custom logs (rmyorston).
 * Fixed building against Boost 1.50 (svenstaro).
 * Updated boost autoconf macros (flameeyes).
 * Autogen script (matthiaskrgr).