Multiple updates - separated by commit message (#527)

* Adds option (default) to place points using the minimum rotated rectangle.

* Fixes og oc calls to proj to use degrees

* Fixes #542

* subpixel changes that merge Kelvin's unmerged work

* Fixes queue flushes

* Updates for comments on PR

* Fixes #524

* Updates subpixel to support no variance.

* Updates to add union, fixes bugs