EqualsExact (non-spatial) method about simplefeatures HOT 2 CLOSED

This is pretty similar to equalsExact from geos: http://geos.refractions.net/ro/doxygen_docs/html/classgeos_1_1geom_1_1Geometry.html#a48

Maybe we just want that instead...

from simplefeatures.

Would also be useful to ignore ordering differences during the comparison, e.g.:

• Ignoring forwards/backwards order for LineStrings
• Ignoring ring direction in Polygons
• Ignoring order of holes in Polygons
• Ignoring order of points in multipoints

Could use the "options" pattern in Go, i.e.

type interface Geometry {
    ...
    EqualsExact(other Geometry, opts ...EqualsExactOption)
    ....
}

The options could be:

func Tolerance(tol float64) EqualsExactOption {
    ...
}

var IgnoreOrder = EqualsExactOption(...)

from simplefeatures.