Log Message:
hugin: updated to 2019.0.0

Changes since 2018.0.0
Added raw import: It converts the RAW images to TIFF using a raw converter. This \ 
can be done by dcraw (requires additional exiftool), RawTherapee or darktable. \ 
These programs needs to be installed externally.
Fixes for align_image_stack with EXR images.
Added option for range compression. Can be helpful for LDR panoramas to brighten \ 
the shadows before merging, because at this stage the blender has some more \ 
information which can be helpful.
New hotkeys for mask editor (change zoom level with 0, 1 and 2).
Expression parser (pto_var and "manipulate image variables" in GUI) \ 
can now read also all image variables.
line_find: Ignore lines with low distance to each other to get better coverage. \ 
Also use only central part of the panorama for searching for line control points \ 
(ignoring zenit/nadir near areas).
pano_modify: Added new switch --projection-parameter to set projection parameters.
Store program settings according to XDG base dir specification (Linux only, \ 
needs to compile with wxWidgets 3.1.1 or later).