Handle GeometryTypes.Point.

[tkoolen]

I was surprised that GeometryTypes.Vec is used for points instead of GeometryTypes.Point (also in the GJK implementation in GeometryTypes). I'd like to at least also support Point, since Vec is meant to be used for free vectors (e.g. displacements) instead of bound vectors, as far as I understand.

I was doubting whether to make this change in GeometryTypes or here, but I feel like here is more appropriate, as GeometryTypes.support_vector_max also returns a score, which is unused in this package and is just wasted computation (unless the compiler is able to optimize that away). In general, I feel like we should maybe stop relying on GeometryTypes.support_vector_max for this reason.

[codecov-io]

Codecov Report

Merging #19 into master will increase coverage by 0.05%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master     #19      +/-   ##
=========================================
+ Coverage   93.54%   93.6%   +0.05%     
=========================================
  Files           8       8              
  Lines         217     219       +2     
=========================================
+ Hits          203     205       +2     
  Misses         14      14

Impacted Files	Coverage Δ
src/gjk.jl	95.77% <100%> (+0.06%)	⬆️
src/tagged_points.jl	100% <100%> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 7d354c2...e005c78. Read the comment docs.