Master

Added GUI widgets and model-viewing app
Fixes travis for race-condition on macOS
Fixes appveyor configuration and to build all branches
Updated travis.yml to support Ubuntu 18.04, gcc-7, and clang-7.0
Contributors guidelines updated
Avoid cstdlib random generators in ransac registration, use C++11 random instead.
Fixed a bug in open3d::geometry::TriangleMesh::ClusterConnectedTriangles.
Added option BUILD_BENCHMARKS for building microbenchmarks
Extend Python API of UniformTSDFVolume to allow setting the origin
Corrected documentation of PointCloud.h
Added ISS Keypoint Detector
Added an RPC interface for external visualizers running in a separate process
Added maximum_error and boundary_weight parameter to simplify_quadric_decimation
Remove support for Python 3.5
Development wheels are available for user testing. See Getting Started page for installation.
PointCloud File IO support for new tensor data types.
New PointCloud format support: XYZI (ASCII).
Fast compression mode for PNG writing. (Issue #846)
Ubuntu 20.04 (Focal) support.
Added Line3D/Ray3D/Segment3D classes with plane, point, closest-distance, and AABB tests
Add Open3D-ML to Open3D wheel

0.9.0