Postgis: add support for more geometry types

[etiennebr]

st_read(con, query = "select st_point(1, 1)::point")
#' st_point
#' 1    (1,1)
#' Warning message:
#'   In st_read.DBIObject(con, query = "select st_point(1, 1)::point") :
#'   Could not find a simple features geometry column. Will return a `data.frame`.

A project for https://github.com/etiennebr/spatial-database-proposal

[edzer]

Is this still on your to-do list?

[etiennebr]

Yes, but feel free to close if you want to clean the list.