Merge branch 'stable'

doc/img/stack-favicon.svg

 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg
-   font-size="1px"
-   viewBox="0 0 1.4 1.4"
-   width="1.4"
-   height="1.4"
+   viewBox="0.0 0.0 512.0 512.0"
+   width="512"
+   height="512"
    version="1.1"
-   id="svg4"
+   id="svg8"
    xmlns="http://www.w3.org/2000/svg"
    xmlns:svg="http://www.w3.org/2000/svg">
-  <rect
-     style="fill:#7e56c2;fill-opacity:1;stroke:none"
+  <path
+     d="M 512,448 V 64 C 512,28.6538 483.3462,0 448,0 H 64 C 28.6538,0 0,28.6538 0,64 v 384 c 0,35.3462 28.6538,64 64,64 h 384 c 35.3462,0 64,-28.6538 64,-64 z"
      id="background"
-     width="1.4"
-     height="1.4"
-     x="0"
-     y="0"
-     rx="0.25"
-     ry="0.25" />
-  <path
-     d="m 1.0039,0.63491541 -0.0784,-0.1176 H 1.2 v 0.1176 z"
-     id="equals-bottom"
+     style="fill:#7e56c2;fill-opacity:1;stroke:none" />
+  <path
+     d="M 74.6667,446.2222 H 437.3334"
+     id="stackline3"
+     style="fill:none;stroke:#ffffff;stroke-width:32;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1" />
+  <path
+     d="M 74.6667,392.8889 H 437.3334"
+     id="stackline2"
+     style="fill:none;stroke:#ffffff;stroke-width:32;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1" />
+  <path
+     d="M 74.6667,339.5556 H 437.3334"
+     id="stackline1"
+     style="fill:none;stroke:#ffffff;stroke-width:32;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1" />
+  <path
+     d="m 366.2222,227.5556 -28.4444,-42.6667 h 99.5556 v 42.6667 z"
+     id="equalsbottom"
      style="fill:#ffffff;fill-opacity:1;stroke:none" />
   <path
-     d="m 0.8863,0.45841541 -0.0784,-0.1176 h 0.3922 v 0.1176 z"
-     id="equals-top"
+     d="m 323.5556,163.5556 -28.4444,-42.6667 h 142.2222 v 42.6667 z"
+     id="equalstop"
      style="fill:#ffffff;fill-opacity:1;stroke:none" />
   <path
-     d="m 0.4353,0.84081541 0.2353,-0.3529 -0.2353,-0.3529 h 0.1765 l 0.4706,0.7059 H 0.9059 l -0.1471,-0.2206 -0.1471,0.2206 z"
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      id="lambda"
      style="fill:#ffffff;fill-opacity:1;stroke:none" />
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-     d="m 0.2,0.84081541 0.2353,-0.3529 -0.2353,-0.3529 h 0.1765 l 0.2353,0.3529 -0.2353,0.3529 z"
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      id="arrow"
      style="fill:#ffffff;fill-opacity:1;stroke:none" />
-  <path
-     style="fill:none;stroke:#ffffff;stroke-width:0.1;stroke-linecap:round;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
-     d="m 0.2,0.93152602 h 1"
-     id="line1" />
-  <path
-     style="fill:none;stroke:#ffffff;stroke-width:0.1;stroke-linecap:round;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
-     d="m 0.2,1.0732465 h 1"
-     id="line2" />
-  <path
-     style="fill:none;stroke:#ffffff;stroke-width:0.1;stroke-linecap:round;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
-     d="m 0.2,1.2149669 h 1"
-     id="line3" />
 </svg>