Docstring and apply reduce fixes (#101)

* Eagerly call `booltype` in `segmentize`

* Add .DS_Store to gitignore

* Fix error in `applyreduce` when passing iterable

* Fix apply docstring

Author: asinghvi17

.gitignore

@@ -1,4 +1,5 @@
 /Manifest.toml
 /docs/build/
 /docs/src/source/
-.vscode/
+.vscode/
+.DS_Store

src/primitives.jl

@@ -19,7 +19,7 @@ complexity involved with handling complex geometry structures.
 For example, a simple way to flip the x and y coordinates of a geometry is:
 
 ```julia
-flipped_geom = GO.apply(GI.PointTrait, geom) do p
+flipped_geom = GO.apply(GI.PointTrait(), geom) do p
     (GI.y(p), GI.x(p))
 end
 ```
@@ -157,7 +157,7 @@ by passing the keyword argument `threaded=true` to `apply`.
 =#
 
 """
-    apply(f, target::Type{<:AbstractTrait}, obj; kw...)
+    apply(f, target::Union{TraitTarget, GI.AbstractTrait}, obj; kw...)
 
 Reconstruct a geometry, feature, feature collection, or nested vectors of
 either using the function `f` on the `target` trait.
@@ -334,7 +334,7 @@ for T in (
 end
 
 """
-    applyreduce(f, op, target::Type{<:AbstractTrait}, obj; threaded)
+    applyreduce(f, op, target::Union{TraitTarget, GI.AbstractTrait}, obj; threaded)
 
 Apply function `f` to all objects with the `target` trait,
 and reduce the result with an `op` like `+`. 
@@ -363,7 +363,7 @@ end
     if Tables.istable(iterable)
         _applyreduce_table(f, op, target, iterable; threaded, init)
     else
-        applyreduce_iterable(i) = _applyreduce(f, op, target, x; threaded=_False(), init)
+        applyreduce_iterable(i) = _applyreduce(f, op, target, i; threaded=_False(), init)
         if threaded isa _True # Try to `collect` and reduce over the vector with threads
             _applyreduce(f, op, target, collect(iterable); threaded, init)
         else

src/transformations/segmentize.jl

@@ -169,7 +169,7 @@ This is useful for plotting geometries with a limited number of vertices, or for
 Returns a geometry of similar type to the input geometry, but resampled.
 """
 function segmentize(geom; max_distance, threaded::Union{Bool, BoolsAsTypes} = _False())
-    return segmentize(LinearSegments(; max_distance), geom; threaded)
+    return segmentize(LinearSegments(; max_distance), geom; threaded = _booltype(threaded))
 end
 function segmentize(method::SegmentizeMethod, geom; threaded::Union{Bool, BoolsAsTypes} = _False())
     @assert method.max_distance > 0 "`max_distance` should be positive and nonzero!  Found $(method.max_distance)."