0.12.3

This release comes exactly 1 year and 1 day after the previous release, for which the inspiration was this quote:

Arrakis teaches the attitude of the knife -- chopping off what's incomplete 
and saying: "Now, it's complete because it's ended here."

• [qt] upgrade the patched Qt to the last Qt 4.8 commit
• removed support for CentOS 5 builds
• update OpenSSL to 1.0.2e and xz to 5.2.2 and libjpeg to 9b
• downgrade libpng to 1.2.56
• #1843: add --keep-relative-links and --resolve-relative-links to resolve relative links
• #1981: fix temporary PDF files not being removed when writing to stdout
• #2104: renamed COPYING to LICENSE
• #2183: apply --javascript-delay settings for non-main resource loaders
• #2190: do not depend on ICU even if it is already installed
• #2194: [qt] fix debugging of Qt/WebKit due to missing debug information
• #2214: [qt] fix broken rendering of transparent images when converting to PDF
• #2252: fix ownership of /usr/local being changed during installation on OS X
• #2280: do not allow data URIs for --header-html or --footer-html
• #2322: fix broken debug builds with MSVC
• #2355: add support for proxy bypass for specific hosts with --bypass-proxy-for
• #2418: fix build error on OS X
• #2560: allow using email address as proxy username
• #2572: fix incorrect version detection when building distro-specific packages

You can get the binaries from the downloads page.