Release 3.0.0

Summary of changes for v3.0.0:

• got tests working when RPATH is skipped
• made it work with system-installed suitesparse (using CXSparse)
• fixed up old Makefile-based build (not really useful but
  whatever.. alternative is to just remove it)
• got tests working under all combination of configurations
  (with/without merit functions, etc.)
• added a file for pkg-config
• added an option for install location of cmake files
• made it generate a new version of fclib.h with implementation
  stuff removed when HARDCODE_NOT_HEADER_ONLY is enabled -- the idea
  is that it is a normal library we just install in /usr/include and
  /usr/lib, so no need for weird header-only stuff to be even
  present in the packaged version.
• the generated header also defines FCLIB_WITH_MERIT_FUNCTIONS and
  FCLIB_NOT_HEADER_ONLY according to configuration.

release 2.0.0

Fix many minor bugs:

• memory deallocation
• new csparse version
• restricted API (do not export internal functions in header file)

Known issues:

• merit function is buggy