error out if no figure is open
don't error out for empty figures
add option 'standalone'
added support for area plots
avoid unit 'px'
handle legend box colors
better handling of custom legend position
handle cropped images
improved colorbar handling; support for inner cbars
set view angle less often
correct octave test file name
add some test cases
improved legend support for octave
fixed bug with legends
fixed double axes bug with grid
outsourced automatic updater
improved updater
removed deprecated parameters
make headers uniform
small bugfix for legends