- some small fixes related to color conversion

Added option to select warper (e.g. to Fisheye, spherical, stereographic,..)

Added option to configure exposure compensation

- added option to select feature finding algorithm
- bug fixes

- allowed maximum number of input images supported by system
- added option to select output image format (jpeg/png)
- added option to choose pano confidence threshold
- added option to select input image resolution
- added option to select registration, seam blending, composition resolutions
- added option to enable/disable wave correction & wave correction type