v1.0.4 Cleanup and minor extensions.

Cleaned up code by using auto for return-type wherever possible in gslcpp/wrap.
Cleaned up code by having v_iface::v() return pointer instead of reference to GSL's native vector.
Extended v_iface::real() so that it works in reasonable way for every type of element (not just for complex types).
Extended v_iface::sum() so that it works even for complex vectors.

v1.0.3 Enforced requirement of gsl-2.7 or later.

gsl-2.7 is required.
Cleaned up some template-declarations and documentation.

v1.0.2 Updated README.md on building documentation.

'README.md' was updated to reflect that 'make doc' is now required (rather than just running 'doxygen' manually).

v1.0.1 Updated README.md for Release v1.

'README.md' is now consistent with release 'v1.0'.

v1.0.0 Wrapper for GSL's vector

All types (double, complex, etc.) of element are supported.
The full GSL-interface for vectors is wrapped.
Templated constructors for allocated vectors and for views are provided with compiler-deducible template-arguments.
Move-constructor is implemented for dynamically allocated vectors.
Statically allocated vectors are also implemented.
Every function is covered by unit-tests.