Release v2.6.0.0

Features

• Added EdgeDetector node, using 3x3 HW sobel filter (demo: https://youtu.be/bG15mpK4z2s)
• Added support for SpatialCalculator on RGB-depth aligned frames; Note: RGB ISP and depth frame must have the same output resolution (e.g. 1280x720), maximum frame width of 1920 pixels is supported
• Added bilateral filter on depth frame
• Added median filter after stereo LR-check
• Added runtime configuration for stereo node: confidence threshold, LR-check threshold, bilateral sigma, median filter
• Added calibration mesh support for fisheye lenses
• Bumped c++ standard to c++14

Bugs

• Calibration handler fixes

Misc

• Code changes: #302