Added Stream.concat

Author: superruzafa

assets/images/functions/Stream/concat-1.tex

@@ -0,0 +1 @@
+../Enum/concat-1.tex

assets/images/functions/Stream/concat-2.tex

@@ -0,0 +1 @@
+../Enum/concat-2.tex

content/en/functions/Stream/concat-1.md

@@ -1,12 +1,8 @@
 ---
 title: concat/1
-url: /Stream/concat/1
-draft: true
+url: Stream/concat/1
 ---
 
-# `Stream.concat/1`
-Brief description and usage of the `Stream`'s `concat/1` function.
+Creates a stream that enumerates each enumerable in `enumerables`.
 
 {{< figure src="images/functions/Stream/concat-1.svg" >}}
-{{< figure src="images/functions/Stream/concat-1.2.svg" >}}
-{{< figure src="images/functions/Stream/concat-1.3.svg" >}}

content/en/functions/Stream/concat-2.md

@@ -1,12 +1,8 @@
 ---
 title: concat/2
-url: /Stream/concat/2
-draft: true
+url: Stream/concat/2
 ---
 
-# `Stream.concat/2`
-Brief description and usage of the `Stream`'s `concat/2` function.
+Creates a stream that enumerates the `left` enumerable, followed by the `right` one.
 
 {{< figure src="images/functions/Stream/concat-2.svg" >}}
-{{< figure src="images/functions/Stream/concat-2.2.svg" >}}
-{{< figure src="images/functions/Stream/concat-2.3.svg" >}}

data/signatures.yaml

@@ -1043,6 +1043,16 @@
         defmodule Stream do
           def chunk_every(enum, count, step, leftover \\ [])
         end
+    - name: concat/1
+      signature: |
+        defmodule Stream do
+          def concat(enumerables)
+        end
+    - name: concat/2
+      signature: |
+        defmodule Stream do
+          def concat(left, right)
+        end
     - name: chunk_while/4
       signature: |
         defmodule Stream do