Bump version: 0.2.2 --> 0.3.0

[JulienPeloton]

0.3.0

• Complete change of the interface (PR). This includes:
  • DataFrame API
  • Extension of the Spark SQL module (new methods + implicits on DataFrame)
  • Metadata are propagated (not just 3D coordinates).
  • Seamless interface with Python
• Compiling against Apache Spark 2.3.2: fix incompatibilities (PR)
• Website update: spark-fits version + vulnerability fix (PR)
• Fix wrong angle definition in cartesian to spherical coordinate change! (PR)

[codecov-io]

Codecov Report

Merging #109 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #109   +/-   ##
=======================================
  Coverage   86.84%   86.84%           
=======================================
  Files          29       29           
  Lines        1140     1140           
  Branches      201      201           
=======================================
  Hits          990      990           
  Misses        150      150

Flag	Coverage Δ
#python	93.63% <ø> (ø)	:arrow_up:
#scala	84.07% <ø> (ø)	:arrow_up:

Impacted Files	Coverage Δ
...m/spark3d/spatialPartitioning/KeyPartitioner.scala	100% <ø> (ø)	:arrow_up:
src/main/scala/com/spark3d/Partitioners.scala	87.03% <ø> (ø)	:arrow_up:
...scala/com/spark3d/spatialPartitioning/Octree.scala	94.2% <ø> (ø)	:arrow_up:
src/main/scala/com/spark3d/utils/Utils.scala	55.26% <ø> (ø)	:arrow_up:
src/main/scala/com/spark3d/Checkers.scala	100% <ø> (ø)	:arrow_up:
...park3d/spatialPartitioning/OnionPartitioning.scala	100% <ø> (ø)	:arrow_up:
...ark3d/spatialPartitioning/OctreePartitioning.scala	100% <ø> (ø)	:arrow_up:
...in/scala/com/spark3d/geometryObjects/Point3D.scala	100% <ø> (ø)	:arrow_up:
...la/com/spark3d/geometryObjects/ShellEnvelope.scala	97.75% <ø> (ø)	:arrow_up:
...spark3d/spatialPartitioning/OnionPartitioner.scala	48.33% <ø> (ø)	:arrow_up:
... and 11 more

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