diff --git a/README.md b/README.md
index faca3e53..c2db5b66 100644
--- a/README.md
+++ b/README.md
@@ -73,6 +73,7 @@ Say thanks!
 <td>Phone<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/phone.svg" width="125" title="Phone" /><br>591 Bytes</td>
 <td>LINE<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/line.svg" width="125" title="LINE" /><br>478 Bytes</td>
 <td>Viber<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/viber.svg" width="125" title="Viber" /><br>719 Bytes</td>
+<td>Mailchimp<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/mailchimp.svg" width="125" title="Mailchimp" /><br>1010 Bytes</td>
 </tr>
 </table>
 
@@ -148,6 +149,7 @@ Say thanks!
 <td>Duck Duck Go<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/duckduckgo.svg" width="125" title="Duck Duck Go" /><br>926 Bytes</td>
 <td>Bing<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/bing.svg" width="125" title="Bing" /><br>241 Bytes</td>
 <td>IMDb<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/imdb.svg" width="125" title="IMDb" /><br>526 Bytes</td>
+<td>Heroku<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/heroku.svg" width="125" title="Heroku" /><br>453 Bytes</td>
 </tr>
 </table>
 
@@ -245,6 +247,11 @@ Say thanks!
 <td>Sass<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/sass.svg" width="125" title="Sass" /><br>531 Bytes</td>
 <td>Linux<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/linux.svg" width="125" title="Linux" /><br>966 Bytes</td>
 <td>JSON<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/json.svg" width="125" title="JSON" /><br>557 Bytes</td>
+<td>Yarn<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/yarn.svg" width="125" title="Yarn" /><br>514 Bytes</td>
+<td>Backbone<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/backbone.svg" width="125" title="Backbone" /><br>463 Bytes</td>
+</tr>
+<tr>
+<td>Go<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/go.svg" width="125" title="Go" /><br>582 Bytes</td>
 </tr>
 </table>
 
diff --git a/images/android-vector-drawable/backbone.xml b/images/android-vector-drawable/backbone.xml
new file mode 100644
index 00000000..cd3a3883
--- /dev/null
+++ b/images/android-vector-drawable/backbone.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="512dp"
+    android:height="512dp"
+    android:viewportWidth="512"
+    android:viewportHeight="512">
+
+    <path
+        android:fillColor="#fff"
+        android:pathData="M15,0 L497,0 Q512,0,512,15 L512,497 Q512,512,497,512 L15,512 Q0,512,0,497 L0,15 Q0,0,15,0 Z" />
+    <path
+        android:fillColor="#000000"
+        android:strokeColor="#848484"
+        android:strokeWidth="2"
+        android:pathData="M380,102 L380,269 L256,339 L256,291 L339,244 L339,170 L256,217 L256,173 L380,102" />
+    <path
+        android:fillColor="#002a41"
+        android:strokeColor="#848484"
+        android:strokeWidth="2"
+        android:pathData="M132,102 L132,269 L256,339 L256,291 L173,244 L173,170 L256,217 L256,173 L132,102 M380,410 L380,243 L256,173 L256,221 L339,268 L339,339 L256,291 L256,339 L380,410" />
+    <path
+        android:fillColor="#000000"
+        android:strokeColor="#848484"
+        android:strokeWidth="2"
+        android:pathData="M132,410 L132,243 L256,173 L256,221 L173,268 L173,339 L256,291 L256,339 L132,410" />
+</vector>
\ No newline at end of file
diff --git a/images/android-vector-drawable/go.xml b/images/android-vector-drawable/go.xml
new file mode 100644
index 00000000..d7d731a2
--- /dev/null
+++ b/images/android-vector-drawable/go.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="512dp"
+    android:height="512dp"
+    android:viewportWidth="512"
+    android:viewportHeight="512">
+
+    <path
+        android:fillColor="#fff"
+        android:pathData="M15,0 L497,0 Q512,0,512,15 L512,497 Q512,512,497,512 L15,512 Q0,512,0,497 L0,15 Q0,0,15,0 Z" />
+    <path
+        android:fillColor="#00acd7"
+        android:pathData="M308,220 C309,222,307,222,306,222 L272,231 C269,233,267,230,267,230 C246,204,202,222,200,260 C198,296,245,310,267,274 L229,274 C226,274,221,273,226,264 L234,247 C236,243,237,243,243,243 L313,243 C313,324,223,360,175,311 C153,288,146,236,191,199 C227,170,287,170,308,220 M324,316 C279,277,303,196,374,183 C447,170,479,238,450,289 C426,332,362,350,324,316 M418,265 C427,240,409,216,382,218 C352,221,331,260,350,283 C369,305,408,295,418,265 M97,263 L97,262 L99,257 L101,256 L142,256 L143,257 L142,262 L141,263 L97,263 M49,245 S47,245,48,244 L52,238 L54,237 L146,237 L147,238 L145,243 L144,244 L49,245 M79,226 L78,225 L83,220 L85,219 L157,219 L157,220 L154,225 L152,226 L79,226" />
+</vector>
\ No newline at end of file
diff --git a/images/android-vector-drawable/heroku.xml b/images/android-vector-drawable/heroku.xml
new file mode 100644
index 00000000..5be6e06c
--- /dev/null
+++ b/images/android-vector-drawable/heroku.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="512dp"
+    android:height="512dp"
+    android:viewportWidth="512"
+    android:viewportHeight="512">
+
+    <path
+        android:fillColor="#000000"
+        android:pathData="M15,0 L497,0 Q512,0,512,15 L512,497 Q512,512,497,512 L15,512 Q0,512,0,497 L0,15 Q0,0,15,0 Z" />
+    <path
+        android:fillColor="#000000"
+        android:strokeColor="#fff"
+        android:strokeWidth="16"
+        android:pathData="M367,99 L145,99 C123,99,115,107,115,129 L115,383 C115,405,123,413,145,413 L367,413 C389,413,397,405,397,383 L397,129 C397,107,388,99,367,99" />
+    <path
+        android:fillColor="#fff"
+        android:pathData="M182,284 C238,256,276,253,289,259 C298,263,298,274,298,274 L298,373 L331,373 L331,273 S330,241,304,229 S242,228,216,235 L216,140 L182,140 M306,194 S328,172,331,140 L297,140 C292,169,272,194,272,194 M182,372 L219,339 L182,306" />
+</vector>
\ No newline at end of file
diff --git a/images/android-vector-drawable/mailchimp.xml b/images/android-vector-drawable/mailchimp.xml
new file mode 100644
index 00000000..9be95d9c
--- /dev/null
+++ b/images/android-vector-drawable/mailchimp.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="512dp"
+    android:height="512dp"
+    android:viewportWidth="512"
+    android:viewportHeight="512">
+
+    <path
+        android:fillColor="#ffe01b"
+        android:pathData="M15,0 L497,0 Q512,0,512,15 L512,497 Q512,512,497,512 L15,512 Q0,512,0,497 L0,15 Q0,0,15,0 Z" />
+    <path
+        android:fillColor="#1e1e1e"
+        android:pathData="M418,306 L412,289 S437,251,375,238 C375,238,379,191,357,169 C405,122,394,51,285,97 C229,-10,13,241,103,281 C94,293,94,353,156,359 C198,449,300,455,359,428 S452,315,418,306 Z M155,346 C104,341,99,271,143,264 S198,350,155,346 Z M140,251 C126,251,109,270,109,270 C41,237,232,18,273,103 C273,103,173,151,140,251 Z M340,336 C340,332,319,342,281,329 C284,308,329,347,404,296 L410,317 C438,312,410,407,320,406 C247,405,224,330,264,289 C272,281,235,265,242,230 C245,215,258,193,291,199 S331,175,353,186 S362,239,365,245 S400,252,406,269 S365,323,292,313 C275,311,265,333,276,347 C298,379,388,358,403,327 C365,356,287,367,281,336 C303,346,340,340,340,336 Z M282,330 Z M209,178 C231,151,260,135,260,135 L254,150 S275,134,298,134 L290,142 C316,143,327,153,327,153 S266,135,209,178 Z M344,217 C357,216,353,246,353,246 L345,246 S331,218,344,217 Z M285,250 C276,251,266,256,267,252 C271,236,308,240,307,254 S298,248,285,250 Z M306,262 C307,264,299,262,293,263 S281,267,281,265 S304,254,306,262 Z M326,265 C329,259,341,265,338,271 S323,271,326,265 Z M351,267 C345,267,345,254,351,254 S357,268,351,268 Z M171,320 C174,323,165,329,158,324 S166,295,148,289 S135,306,130,303 S137,268,158,281 S152,314,164,320 S169,318,171,320 Z" />
+</vector>
\ No newline at end of file
diff --git a/images/android-vector-drawable/yarn.xml b/images/android-vector-drawable/yarn.xml
new file mode 100644
index 00000000..ae7c7312
--- /dev/null
+++ b/images/android-vector-drawable/yarn.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="512dp"
+    android:height="512dp"
+    android:viewportWidth="512"
+    android:viewportHeight="512">
+
+    <path
+        android:fillColor="#000000"
+        android:pathData="M15,0 L497,0 Q512,0,512,15 L512,497 Q512,512,497,512 L15,512 Q0,512,0,497 L0,15 Q0,0,15,0 Z" />
+    <path
+        android:fillColor="#000000"
+        android:strokeColor="#fff"
+        android:strokeWidth="16"
+        android:pathData="M411,310 C388,306,341,344,329,344 C329,344,340,291,296,242 C339,181,328,122,320,105 C310,86,296,98,296,98 S272,23,240,100 C201,98,193,125,168,135 C141,166,169,203,169,203 C132,233,123,281,125,298 C98,317,101,377,122,384 C113,405,143,422,175,405 C175,405,183,418,195,419 C226,421,296,417,305,404 C333,402,398,352,416,353 C437,355,450,313,411,310" />
+    <path
+        android:fillColor="#fff"
+        android:pathData="M172,399 C180,392,184,367,184,367 L195,377 S175,387,185,405 L172,399" />
+</vector>
\ No newline at end of file
diff --git a/images/reference/Backbone_js_logo.svg b/images/reference/Backbone_js_logo.svg
new file mode 100644
index 00000000..6ddd969c
--- /dev/null
+++ b/images/reference/Backbone_js_logo.svg
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   version="1.1"
+   width="900"
+   height="161"
+   id="svg2">
+  <defs
+     id="defs4" />
+  <metadata
+     id="metadata7">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     transform="translate(129.47008,-1148.7329)"
+     id="layer1">
+    <g
+       transform="matrix(0.17893165,0,0,0.17893165,-129.37356,1149.0013)"
+       id="Page 1"
+       style="fill:#d8d8d8;fill-rule:evenodd">
+      <g
+         id="BackBone.JS">
+        <path
+           d="M 0,0 0,485 361,690.78502 361,550.90277 119.49609,413.23549 119.49609,197 361,334.66728 361,205.78502 0,0 z m 0,0"
+           id="Path"
+           style="fill:#002a41;stroke:#848484;stroke-width:1" />
+        <path
+           d="M 722,0 722,485 361,690.78502 361,550.90277 602.50391,413.23549 602.50391,197 361,334.66728 361,205.78502 722,0 z m 0,0"
+           id="path2996"
+           style="fill:#0071b5;stroke:#848484;stroke-width:1" />
+        <path
+           d="m 0,896.78502 0,-485 L 361,206 l 0,139.88225 -241.50391,137.66728 0,205.23549 L 361,551.11775 361,691 0,896.78502 z m 0,0"
+           id="path2998"
+           style="fill:#0071b5;stroke:#848484;stroke-width:1" />
+        <path
+           d="m 722,896.78502 0,-485 L 361,206 l 0,139.88225 241.50391,137.66728 0,205.23549 L 361,551.11775 361,691 722,896.78502 z m 0,0"
+           id="path3000"
+           style="fill:#002a41;stroke:#848484;stroke-width:1" />
+      </g>
+    </g>
+  </g>
+</svg>
diff --git a/images/reference/Go-Logo_Blue.svg b/images/reference/Go-Logo_Blue.svg
new file mode 100644
index 00000000..64e96207
--- /dev/null
+++ b/images/reference/Go-Logo_Blue.svg
@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="utf-8"?>
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+<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 viewBox="0 0 254.5 225" style="enable-background:new 0 0 254.5 225;" xml:space="preserve">
+<style type="text/css">
+	.st0{fill:#2DBCAF;}
+	.st1{fill:#5DC9E1;}
+	.st2{fill:#FDDD00;}
+	.st3{fill:#CE3262;}
+	.st4{fill:#00ACD7;}
+	.st5{fill:#FFFFFF;}
+</style>
+<g>
+	<g>
+		<g>
+			<g>
+				<path class="st4" d="M40.2,101.1c-0.4,0-0.5-0.2-0.3-0.5l2.1-2.7c0.2-0.3,0.7-0.5,1.1-0.5l35.7,0c0.4,0,0.5,0.3,0.3,0.6
+					l-1.7,2.6c-0.2,0.3-0.7,0.6-1,0.6L40.2,101.1z"/>
+			</g>
+		</g>
+	</g>
+	<g>
+		<g>
+			<g>
+				<path class="st4" d="M25.1,110.3c-0.4,0-0.5-0.2-0.3-0.5l2.1-2.7c0.2-0.3,0.7-0.5,1.1-0.5l45.6,0c0.4,0,0.6,0.3,0.5,0.6
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diff --git a/images/reference/Mailchimp_v1.svg b/images/reference/Mailchimp_v1.svg
new file mode 100755
index 00000000..8e8ff77f
--- /dev/null
+++ b/images/reference/Mailchimp_v1.svg
@@ -0,0 +1,78 @@
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+	 viewBox="0 0 1366 768" style="enable-background:new 0 0 1366 768;" xml:space="preserve">
+<g>
+	<g>
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+		<path d="M876,592.8c-9,0-13.1,6.7-14.9,10.6c-1.2,2.5-1.1,3.3-2,3.3c-1.3,0-0.2-2,0.3-4.4c1.1-4.7,0.3-8.3,0.3-8.3h-12.8v61.5
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+</g>
+</svg>
diff --git a/images/reference/heroku-logo-stroke-white.png b/images/reference/heroku-logo-stroke-white.png
new file mode 100644
index 00000000..3e305439
Binary files /dev/null and b/images/reference/heroku-logo-stroke-white.png differ
diff --git a/images/reference/index.md b/images/reference/index.md
index 596b797f..33767dc3 100644
--- a/images/reference/index.md
+++ b/images/reference/index.md
@@ -140,3 +140,8 @@ Where possible this links to the organisation's brand guidelines page.
 | <img src="/images/svg/linux.svg" width="256" /> | <img src="/images/reference/Classic_flat_look_v1.1.svg" width="256" />  | https://www.linuxfoundation.org/trademark-usage/ |
 | <img src="/images/svg/imdb.svg" width="256" /> | <img src="/images/reference/imdb.svg" width="256" />  | https://imdb.com/ |
 | <img src="/images/svg/nhs.svg" width="256" /> | <img src="/images/reference/nhs-logo-digital-space.jpg" width="256" />  | https://www.england.nhs.uk/nhsidentity/identity-guidelines/nhs-logo/ |
+| <img src="/images/svg/yarn.svg" width="256" /> | <img src="/images/reference/yarn_pkg.svg" width="256" />  | https://yarnpkg.com/en/ |
+| <img src="/images/svg/backbone.svg" width="256" /> | <img src="/images/reference/Backbone_js_logo.svg" width="256" />  | https://backbonejs.org/ |
+| <img src="/images/svg/heroku.svg" width="256" /> | <img src="/images/reference/heroku-logo-stroke-white.png" width="256" />  | https://brand.heroku.com/ |
+| <img src="/images/svg/go.svg" width="256" /> | <img src="/images/reference/Go-Logo_Blue.svg" width="256" />  | https://blog.golang.org/go-brand |
+| <img src="/images/svg/mailchimp.svg" width="256" /> | <img src="/images/reference/Mailchimp_v1.svg" width="256" />  | https://mailchimp.com/about/brand-assets/ |
diff --git a/images/reference/yarn_pkg.svg b/images/reference/yarn_pkg.svg
new file mode 100644
index 00000000..a98ded56
--- /dev/null
+++ b/images/reference/yarn_pkg.svg
@@ -0,0 +1,12 @@
+<svg class="logo navbar-logo" xmlns="http://www.w3.org/2000/svg" xmlns:x="http://www.w3.org/1999/xlink"
+
+viewBox="0 0 518 518">
+
+  <defs>
+<path id="main" fill="#117cad" d="M259 0c143 0 259 116 259 259S402 518 259 518 0 402 0 259 116 0 259 0z"></path> 
+  </defs>
+
+  <use class="logo-primary" x:href="#main" x="0" y="0"></use>
+
+  <path class="logo-secondary" fill="white" d="M435.2 337.5c-1.8-14.2-13.8-24-29.2-23.8-23 .3-42.3 12.2-55.1 20.1-5 3.1-9.3 5.4-13 7.1.8-11.6.1-26.8-5.9-43.5-7.3-20-17.1-32.3-24.1-39.4 8.1-11.8 19.2-29 24.4-55.6 4.5-22.7 3.1-58-7.2-77.8-2.1-4-5.6-6.9-10-8.1-1.8-.5-5.2-1.5-11.9.4C293.1 96 289.6 93.8 286.9 92c-5.6-3.6-12.2-4.4-18.4-2.1-8.3 3-15.4 11-22.1 25.2-1 2.1-1.9 4.1-2.7 6.1-12.7.9-32.7 5.5-49.6 23.8-2.1 2.3-6.2 4-10.5 5.6h.1c-8.8 3.1-12.8 10.3-17.7 23.3-6.8 18.2.2 36.1 7.1 47.7-9.4 8.4-21.9 21.8-28.5 37.5-8.2 19.4-9.1 38.4-8.8 48.7-7 7.4-17.8 21.3-19 36.9-1.6 21.8 6.3 36.6 9.8 42 1 1.6 2.1 2.9 3.3 4.2-.4 2.7-.5 5.6.1 8.6 1.3 7 5.7 12.7 12.4 16.3 13.2 7 31.6 10 45.8 2.9 5.1 5.4 14.4 10.6 31.3 10.6h1c4.3 0 58.9-2.9 74.8-6.8 7.1-1.7 12-4.7 15.2-7.4 10.2-3.2 38.4-12.8 65-30 18.8-12.2 25.3-14.8 39.3-18.2 13.6-3.3 22.1-15.7 20.4-29.4zm-23.8 14.7c-16 3.8-24.1 7.3-43.9 20.2-30.9 20-64.7 29.3-64.7 29.3s-2.8 4.2-10.9 6.1c-14 3.4-66.7 6.3-71.5 6.4-12.9.1-20.8-3.3-23-8.6-6.7-16 9.6-23 9.6-23s-3.6-2.2-5.7-4.2c-1.9-1.9-3.9-5.7-4.5-4.3-2.5 6.1-3.8 21-10.5 27.7-9.2 9.3-26.6 6.2-36.9.8-11.3-6 .8-20.1.8-20.1s-6.1 3.6-11-3.8c-4.4-6.8-8.5-18.4-7.4-32.7 1.2-16.3 19.4-32.1 19.4-32.1s-3.2-24.1 7.3-48.8c9.5-22.5 35.1-40.6 35.1-40.6s-21.5-23.8-13.5-45.2c5.2-14 7.3-13.9 9-14.5 6-2.3 11.8-4.8 16.1-9.5 21.5-23.2 48.9-18.8 48.9-18.8s13-39.5 25-31.8c3.7 2.4 17 32 17 32s14.2-8.3 15.8-5.2c8.6 16.7 9.6 48.6 5.8 68-6.4 32-22.4 49.2-28.8 60-1.5 2.5 17.2 10.4 29 43.1 10.9 29.9 1.2 55 2.9 57.8.3.5.4.7.4.7s12.5 1 37.6-14.5c13.4-8.3 29.3-17.6 47.4-17.8 17.5-.3 18.4 20.2 5.2 23.4z"></path>
+</svg>
\ No newline at end of file
diff --git a/images/svg/backbone.svg b/images/svg/backbone.svg
new file mode 100644
index 00000000..f67e1377
--- /dev/null
+++ b/images/svg/backbone.svg
@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg"
+aria-label="Backbone" role="img"
+viewBox="0 0 512 512" fill="#0071b5"><rect
+width="512" height="512"
+rx="15%"
+fill="#fff"/><g stroke="#848484" stroke-width="2"><path d="M380 102v167l-124 70v-48l83-47v-74l-83 47v-44l124-71"/><path fill="#002a41" d="M132 102v167l124 70v-48l-83-47v-74l83 47v-44l-124-71M380 410V243l-124-70v48l83 47v71l-83-48v48l124 71"/><path d="M132 410V243l124-70v48l-83 47v71l83-48v48l-124 71"/></g></svg>
\ No newline at end of file
diff --git a/images/svg/go.svg b/images/svg/go.svg
new file mode 100644
index 00000000..94829c78
--- /dev/null
+++ b/images/svg/go.svg
@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg"
+aria-label="Go" role="img"
+viewBox="0 0 512 512"><rect
+width="512" height="512"
+rx="15%"
+fill="#fff"/><path fill="#00acd7" d="M308 220c1 2-1 2-2 2l-34 9c-3 2-5-1-5-1-21-26-65-8-67 30-2 36 45 50 67 14h-38c-3 0-8-1-3-10l8-17c2-4 3-4 9-4h70c0 81-90 117-138 68-22-23-29-75 16-112 36-29 96-29 117 21m16 96c-45-39-21-120 50-133 73-13 105 55 76 106-24 43-88 61-126 27m94-51c9-25-9-49-36-47-30 3-51 42-32 65 19 22 58 12 68-18m-321-2v-1l2-5 2-1h41l1 1-1 5-1 1H97m-48-18s-2 0-1-1l4-6 2-1h92l1 1-2 5-1 1-95 1m30-19l-1-1 5-5 2-1h72v1l-3 5-2 1H79"/></svg>
\ No newline at end of file
diff --git a/images/svg/heroku.svg b/images/svg/heroku.svg
new file mode 100755
index 00000000..ab392210
--- /dev/null
+++ b/images/svg/heroku.svg
@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg"
+aria-label="Heroku" role="img"
+viewBox="0 0 512 512" fill="#430098"><rect
+width="512" height="512"
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diff --git a/images/svg/mailchimp.svg b/images/svg/mailchimp.svg
new file mode 100755
index 00000000..08e3f302
--- /dev/null
+++ b/images/svg/mailchimp.svg
@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg"
+aria-label="Mailchimp" role="img"
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+width="512" height="512"
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diff --git a/images/svg/yarn.svg b/images/svg/yarn.svg
new file mode 100644
index 00000000..bd8a2694
--- /dev/null
+++ b/images/svg/yarn.svg
@@ -0,0 +1,5 @@
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