v0.15.0

Clustering v0.15.0

This minor release consolidates the two implementations of DBSCAN fixing some
bugs and introducing breaking changes that require updates to the user code:

• res = dbscan(point, radius; kwargs...) now returns DbscanResult instead of Vector{DbscanCluster}.
  To get the vector of clusters use res.clusters.
• dbscan(dists, radius, N) is deprecated. Use dbscan(dists, radius, min_neighbors=N, metric=nothing) instead.

Diff since v0.14.4

Closed issues:

• DBSCAN DenseMatrix Requirement (#153)
• DBscan Adjacency Lists have repeated clusters (#200)
• Docu for DBscan (#201)
• Readthedocs github link broken (#202)
• DBSCAN docs - consistency between 2 APIs (#221)

Merged pull requests:

• Refactor dbscan() (#248) (@alyst)
• Adjust CI setup for docs (#249) (@ararslan)