* Files can now be accessed via HTTPS and Amazon S3 in addition to HTTP
and FTP, when HTSlib is configured to use libcurl for network file access
rather than the included basic knetfile networking.
* HTSlib can be built to use remote access hFILE backends (such as iRODS
and libcurl) via a plugin mechanism. This allows other backends to be
easily added and facilitates building tools that use HTSlib, as they
don't need to be linked with the backends' various required libraries.
* fai_build() and samtools faidx now accept initial whitespace in ">"
headers (e.g., "> chr1 description" is taken to refer to "chr1").
* tabix --only-header works again (was broken in 1.2.x; #249).
* HTSlib's configure script and Makefile now fully support the standard
convention of allowing CC/CPPFLAGS/CFLAGS/LDFLAGS/LIBS to be overridden
as needed. Previously the Makefile listened to $(LDLIBS) instead; if you
were overriding that, you should now override LIBS rather than LDLIBS.
* Fixed bugs #168, #172, #176, #197, #206, #225, #245, #265, #295, and #296.