Hugin 2015.0beta1

CHANGES SINCE 2014.0.0

Hugin 2015.0 has a number of new features. Most of the changes are under the hood
to improve stability, allow easier maintenance and easier addition of new features.

The makefile based stitching engine has been replaced with direct calls to the
underlying programs. This should reduce the overhead of calling the same
program too often and so speed up the whole process. Hopefully this also allows
the usage of more unusual characters in the filename. Instead of pto2mk and make
we now have hugin_executor which can also be used for running the assistant
from the command line.

Hugin now has it's own blender, verdandi, based on a watershed algorithm,
which has been included in 'nona'. verdandi can be chosen as the blender
by choosing "builtin" in the stitcher tab, and can also be set in the Preferences.
verdandi can also be called as a command line tool.

The lensfun library has been removed as it did not fulfill our expectations.
It has been replaced with our own camera and lens database which uses a
data mining approach and operates automatically without user intervention.
Geometric distortion and vignetting data have to be loaded manually.

The fast preview window has a new tool to add or remove control points to
selected areas in the output projection.

Automatic exposure stack detection is now applied when loading images,
and an option has been added to unlink image position when adding stacks.

The fine-tune and auto-estimate functions in the control point tab have been
made projection aware. It should now work also with images with different fov
or different projections. The fine-tune feature has had a significant speed up when
Hugin is compiled with the libfftw3 library (optional).

PTBatcherGUI has more choice for the end of the process: depending on the operating
system the PTBatcherGUI can be closed, the computer can be shut down or send to
the hibernate mode.

PTBatcherGUI now shows the thumbnails when searching for images in directories.

Many of the underlying tools in hugin are now able to use available cpu cores.

New tools added:

    verdandi: tool for image blending
    hugin_executor: stitching and run assistant from command line
    lensdb: tools for lens database maintenance