release 0.12.4

release 0.12.3.2

release 0.12.3.1

release 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."

update OpenSSL and libpng to release 0.12.2.4 for Windows

OpenSSL was updated to 1.0.1p
libpng  was updated to 1.5.22

update OpenSSL to 1.0.1o (and release 0.12.2.3 for Windows)

update OpenSSL to 1.0.1m (and release 0.12.2.2 for Windows)

release 0.12.2.1

release 0.12.2

update OpenSSL to 1.0.1j