Merge pull request #1275 from crc32a/master

Adding binding for NID_issuer_alt_name cause we may need it in pyopenssl
Merge pull request #1246 from Ayrx/add-binding

Add GENERAL_NAMES_free binding
Merge pull request #1268 from crc32a/X509V3_EXT_d2i_binding

Adding binding for void *X509V3_EXT_d2i(X509_EXTENSION *ext);
update changelog
update changelog
Merge pull request #1306 from reaperhulk/backport-bindings

Backports for 0.5.4