pass extra save_stream keywords to image2wand (#199)

Similar to the save_ method for filename, this PR passes extra keywords to image2wand. An example of this is a stream gif saving with fps keyword.

Also fixes a FileIO depwarn in the tests.

Author: johnnychen94

src/ImageMagick.jl

@@ -166,8 +166,8 @@ end
 
 # This differs from `save_` for files because this is primarily used
 # by IJulia, and we want to restrict large images to make display faster.
-function save_(s::Stream, img, permute_horizontal=true; mapi = clamp01nan, quality = nothing)
-    wand = image2wand(img, mapi, quality, permute_horizontal)
+function save_(s::Stream, img, permute_horizontal=true; mapi = clamp01nan, quality = nothing, kwargs...)
+    wand = image2wand(img, mapi, quality, permute_horizontal; kwargs...)
     blob = getblob(wand, formatstring(s))
     write(stream(s), blob)
 end

test/constructed_images.jl

@@ -214,7 +214,7 @@ mutable struct TestType end
         orig_img = ImageMagick.load(joinpath(workdir, "2by2.png"))
         fn = joinpath(workdir, "2by2_fromstream.png")
         open(fn, "w") do f
-            ImageMagick.save(Stream(format"PNG", f), orig_img)
+            ImageMagick.save(Stream{format"PNG"}(f), orig_img)
         end
         img = ImageMagick.load(fn)
         @test img == orig_img
@@ -279,6 +279,15 @@ mutable struct TestType end
         readimage(wand, fn)
         resetiterator(wand)
         @test ImageMagick.getimagedelay(wand) == 50
+
+        fn = joinpath(workdir, "animated.gif")
+        open(fn, "w") do io
+            ImageMagick.save(FileIO.Stream{format"GIF"}(io), A, fps=2)
+        end
+        wand = MagickWand()
+        readimage(wand, fn)
+        resetiterator(wand)
+        @test ImageMagick.getimagedelay(wand) == 50
     end
 
     @testset "ImageMeta" begin

test/images/test-exiforientation.zip

@@ -160,9 +160,8 @@ end
 end
 
 @testset "EXIF orientation" begin
-    url = "http://magnushoff.com/assets/test-exiforientation.zip"
-    fn = joinpath(workdir, "test-exiforientation.zip")
-    download(url, fn)
+    # downloaded from http://magnushoff.com/assets/test-exiforientation.zip
+    fn = joinpath(@__DIR__, "images", "test-exiforientation.zip")
     first_img = true
     r = ZipFile.Reader(fn)
     local img0