v0.2.2

PointNeighbors v0.2.2

Diff since v0.2.1

Merged pull requests:

• Restructure tests (#13) (@efaulhaber)
• Add tests comparing neighbor lists to trivial NHS (#15) (@efaulhaber)
• Rename files according to nhs_*.jl (#16) (@LasNikas)
• Bump julia-actions/cache from 1 to 2 (#21) (@dependabot[bot])
• Add docs for initialize! and update! (#22) (@efaulhaber)