Andreas, Denis, and Juraj provided substantial amounts of new code
and should also receive appropriate credits. :-)

Makes it much easier to e.g. only use OpenCL even though CUDA is enabled.
Since this relies on a singleton, the mechanism is not thread-safe.

Migration to Doxygen 1.8.x complete. Resolves #18.

Results in shorter URLs.

A temporary buffer wasn't flushed, still contained old values.

Now deals correctly with very small systems for which the maximum iteration
count is larger than the system size.

Uses temporaries C = trans(B) in order to avoid troubles with corner
cases like A += trans(A).

Enables support for operations like
 C = fabs(A - trans(B))
and is supposed to work with both matrix and vector expressions.

Flags used: -Wall -Wextra -Weverything -pedantic -Werror
-Wno-exit-time-destructors -Wno-global-constructors -Wno-padded -Wno-weak-vtables
-Wno-documentation -Wno-old-style-cast -Wno-switch-enum

For reasons of backwards compatibility and uniformity with other headers.

Flags used: -Wall -Wextra -Weverything -pedantic -Werror
-Wno-exit-time-destructors -Wno-global-constructors -Wno-padded -Wno-weak-vtables

Resolves #82 to the extent possible. A bullet-proof fix for 'auto'
requires substantial refactoring and internal changes, which
won't happen prior to ViennaCL 2.0.0.

Introduced by commit 79c21e63
because of a not careful enough fixing of warnings.

Derived from a Radeon HD 6850 with a tuning run.

Obtained on a Radeon HD 5450. Very low-end GPU, profile aims at compatibility
rather than performance.

Flags used: -Wall -Wextra -Weverything -pedantic -Werror
-Wno-exit-time-destructors -Wno-global-constructors -Wno-padded -Wno-weak-vtables

Only requires four kernels per iteration, which is much better than
the Householder version. Implementation follows Algorithm 2.1 in
Walker, Zhou: "A Simpler GMRES" (1994)

Also includes a new example showing the use case.
Resolves #69.

Reported-by: Pushkar Ratnalikar via viennacl-devel

Might have gotten lost during refactoring?

Vector types lead to compilation issues on NVIDIA GPUs with abs(), since
 x = abs(y)
does not compile due to incompatible vector types.

Discusssion here:
https://github.com/viennacl/viennacl-dev/issues/106

No more collisions with GMRES anymore. Resolves #61

Resolves #49