v0.12.0 release

What's Changed

• Fix a stack overflow error in DrainIterator by @nickguletskii in #127
• Remove actually unused depth parameter and make Clippy happy. by @adamreichold in #130
• Update rstar-benches geo dependency by @michaelkirk in #131
• add mint feature for Point trait impl for mint::Point2 and mint::Point3 by @ripytide in #134
• Better distance_2 docs by @urschrei in #136
• Add cached envelope benchmark by @urschrei in #137
• update to heapless=0.8 by @rursprung in #140
• Update CI as a precursor to enabling merge queues by @urschrei in #143
• Minor doc updates by @urschrei in #144
• Implement an owning iterator and IntoIter for RTree by @adamreichold in #146
• Hash and Default impls, and some type coverage tests by @pthariensflame in #150
• Losslessly shrink rtree-example.png by @pthariensflame in #152
• Update the scaling discussion for bulk_load by @jerabaul29 in #156
• Use SmallHeap also for the iterator-based nearest neighbour search and optimize its spill implementation. by @adamreichold in #154

New Contributors

• @nickguletskii made their first contribution in #127
• @ripytide made their first contribution in #134
• @rursprung made their first contribution in #140
• @pthariensflame made their first contribution in #150
• @jerabaul29 made their first contribution in #156

Full Changelog: v0.11.0...v0.12.0