diff --git a/07/index.php b/07/index.php
index ce2ac7a..491c360 100644
--- a/07/index.php
+++ b/07/index.php
@@ -20,165 +20,6 @@
 	$Parsedown = new Parsedown();
 	echo $Parsedown->text(file_get_contents($README.'.md'));
 
-	echo '
-<h3>Learn new shapes and geometric elements</h3>
-<p>If you are interested on a library of 2D geometric shapes together with design rules to combined them. Take a look to <a href="http://pixelspiritdeck.com/" target="_blank">this deck of cards</a>.</p>
-<div id="product-component-a574df7e41a"></div>
-<script type="text/javascript">
-/*<![CDATA[*/
-
-(function () {
-  var scriptURL = "https://sdks.shopifycdn.com/buy-button/latest/buy-button-storefront.min.js";
-  if (window.ShopifyBuy) {
-    if (window.ShopifyBuy.UI) {
-      ShopifyBuyInit();
-    } else {
-      loadScript();
-    }
-  } else {
-    loadScript();
-  }
-
-  function loadScript() {
-    var script = document.createElement("script");
-    script.async = true;
-    script.src = scriptURL;
-    (document.getElementsByTagName("head")[0] || document.getElementsByTagName("body")[0]).appendChild(script);
-    script.onload = ShopifyBuyInit;
-  }
-
-  function ShopifyBuyInit() {
-    var client = ShopifyBuy.buildClient({
-      domain: "pixelspirit.myshopify.com",
-      apiKey: "686544ffb4b575bec76a775b422b5d72",
-      appId: "6",
-    });
-
-    ShopifyBuy.UI.onReady(client).then(function (ui) {
-      ui.createComponent("product", {
-        id: [8723521601],
-        node: document.getElementById("product-component-a574df7e41a"),
-        moneyFormat: "%24%7B%7Bamount%7D%7D",
-        options: {
-  "product": {
-    "layout": "horizontal",
-    "variantId": "all",
-    "width": "100%",
-    "contents": {
-      "img": false,
-      "imgWithCarousel": true,
-      "variantTitle": false,
-      "description": true,
-      "buttonWithQuantity": false,
-      "quantity": false
-    },
-    "styles": {
-      "product": {
-        "text-align": "left",
-        "@media (min-width: 601px)": {
-          "max-width": "100%",
-          "margin-left": "0",
-          "margin-bottom": "50px"
-        }
-      },
-      "button": {
-        "background-color": "#000000",
-        ":hover": {
-          "background-color": "#000000"
-        },
-        ":focus": {
-          "background-color": "#000000"
-        }
-      },
-      "title": {
-        "font-size": "26px"
-      },
-      "price": {
-        "font-size": "18px"
-      },
-      "compareAt": {
-        "font-size": "15px"
-      }
-    }
-  },
-  "cart": {
-    "contents": {
-      "button": true
-    },
-    "styles": {
-      "button": {
-        "background-color": "#000000",
-        ":hover": {
-          "background-color": "#000000"
-        },
-        ":focus": {
-          "background-color": "#000000"
-        }
-      },
-      "footer": {
-        "background-color": "#ffffff"
-      }
-    }
-  },
-  "modalProduct": {
-    "contents": {
-      "img": false,
-      "imgWithCarousel": true,
-      "variantTitle": false,
-      "buttonWithQuantity": true,
-      "button": false,
-      "quantity": false
-    },
-    "styles": {
-      "product": {
-        "@media (min-width: 601px)": {
-          "max-width": "100%",
-          "margin-left": "0px",
-          "margin-bottom": "0px"
-        }
-      },
-      "button": {
-        "background-color": "#000000",
-        ":hover": {
-          "background-color": "#000000"
-        },
-        ":focus": {
-          "background-color": "#000000"
-        }
-      }
-    }
-  },
-  "toggle": {
-    "styles": {
-      "toggle": {
-        "background-color": "#000000",
-        ":hover": {
-          "background-color": "#000000"
-        },
-        ":focus": {
-          "background-color": "#000000"
-        }
-      }
-    }
-  },
-  "productSet": {
-    "styles": {
-      "products": {
-        "@media (min-width: 601px)": {
-          "margin-left": "-20px"
-        }
-      }
-    }
-  }
-}
-      });
-    });
-  }
-})();
-/*]]>*/
-</script>
-	';
-
 	echo '
 	</div>
 	<hr>
diff --git a/08/index.php b/08/index.php
index 8c5e6f9..9ae20b0 100644
--- a/08/index.php
+++ b/08/index.php
@@ -20,166 +20,6 @@
 	$Parsedown = new Parsedown();
 	echo $Parsedown->text(file_get_contents($README.'.md'));
 
-	echo '
-<h3>Learn more composition patterns</h3>
-<p>If you are interested on learning new pattern of composition take a look to <a href="http://pixelspiritdeck.com/" target="_blank">this deck of cards</a>.</p>
-<div id="product-component-a574df7e41a"></div>
-<script type="text/javascript">
-/*<![CDATA[*/
-
-(function () {
-  var scriptURL = "https://sdks.shopifycdn.com/buy-button/latest/buy-button-storefront.min.js";
-  if (window.ShopifyBuy) {
-    if (window.ShopifyBuy.UI) {
-      ShopifyBuyInit();
-    } else {
-      loadScript();
-    }
-  } else {
-    loadScript();
-  }
-
-  function loadScript() {
-    var script = document.createElement("script");
-    script.async = true;
-    script.src = scriptURL;
-    (document.getElementsByTagName("head")[0] || document.getElementsByTagName("body")[0]).appendChild(script);
-    script.onload = ShopifyBuyInit;
-  }
-
-  function ShopifyBuyInit() {
-    var client = ShopifyBuy.buildClient({
-      domain: "pixelspirit.myshopify.com",
-      apiKey: "686544ffb4b575bec76a775b422b5d72",
-      appId: "6",
-    });
-
-    ShopifyBuy.UI.onReady(client).then(function (ui) {
-      ui.createComponent("product", {
-        id: [8723521601],
-        node: document.getElementById("product-component-a574df7e41a"),
-        moneyFormat: "%24%7B%7Bamount%7D%7D",
-        options: {
-  "product": {
-    "layout": "horizontal",
-    "variantId": "all",
-    "width": "100%",
-    "contents": {
-      "img": false,
-      "imgWithCarousel": true,
-      "variantTitle": false,
-      "description": true,
-      "buttonWithQuantity": false,
-      "quantity": false
-    },
-    "styles": {
-      "product": {
-        "text-align": "left",
-        "@media (min-width: 601px)": {
-          "max-width": "100%",
-          "margin-left": "0",
-          "margin-bottom": "50px"
-        }
-      },
-      "button": {
-        "background-color": "#000000",
-        ":hover": {
-          "background-color": "#000000"
-        },
-        ":focus": {
-          "background-color": "#000000"
-        }
-      },
-      "title": {
-        "font-size": "26px"
-      },
-      "price": {
-        "font-size": "18px"
-      },
-      "compareAt": {
-        "font-size": "15px"
-      }
-    }
-  },
-  "cart": {
-    "contents": {
-      "button": true
-    },
-    "styles": {
-      "button": {
-        "background-color": "#000000",
-        ":hover": {
-          "background-color": "#000000"
-        },
-        ":focus": {
-          "background-color": "#000000"
-        }
-      },
-      "footer": {
-        "background-color": "#ffffff"
-      }
-    }
-  },
-  "modalProduct": {
-    "contents": {
-      "img": false,
-      "imgWithCarousel": true,
-      "variantTitle": false,
-      "buttonWithQuantity": true,
-      "button": false,
-      "quantity": false
-    },
-    "styles": {
-      "product": {
-        "@media (min-width: 601px)": {
-          "max-width": "100%",
-          "margin-left": "0px",
-          "margin-bottom": "0px"
-        }
-      },
-      "button": {
-        "background-color": "#000000",
-        ":hover": {
-          "background-color": "#000000"
-        },
-        ":focus": {
-          "background-color": "#000000"
-        }
-      }
-    }
-  },
-  "toggle": {
-    "styles": {
-      "toggle": {
-        "background-color": "#000000",
-        ":hover": {
-          "background-color": "#000000"
-        },
-        ":focus": {
-          "background-color": "#000000"
-        }
-      }
-    }
-  },
-  "productSet": {
-    "styles": {
-      "products": {
-        "@media (min-width: 601px)": {
-          "margin-left": "-20px"
-        }
-      }
-    }
-  }
-}
-      });
-    });
-  }
-})();
-/*]]>*/
-</script>
-	';
-
-
 	echo '
 	</div>
 	<hr>
diff --git a/08/matrices.frag b/08/matrices.frag
index 89a8ab3..1688e34 100644
--- a/08/matrices.frag
+++ b/08/matrices.frag
@@ -7,7 +7,7 @@ precision mediump float;
 #define PI_4 0.785398163397448309616
 #define PI180 .017453293
 
-float PHI = (1.0+sqrtf(5.0))/2.0;
+float PHI = (1.0+sqrt(5.0))/2.0;
 float sind(float a){return sin(a * PI180);}
 float cosd(float a){return cos(a * PI180);}
 
diff --git a/src/glslEditor b/src/glslEditor
index 6a33882..43c957f 160000
--- a/src/glslEditor
+++ b/src/glslEditor
@@ -1 +1 @@
-Subproject commit 6a338828ace0bc0a3d3530a445c78b4add50a516
+Subproject commit 43c957fe1454c19d74e312d45aac2bf109598f25
diff --git a/src/parsedown b/src/parsedown
index 28774a4..728952b 160000
--- a/src/parsedown
+++ b/src/parsedown
@@ -1 +1 @@
-Subproject commit 28774a4359120d2e02e8b6285ed05670c1bc7053
+Subproject commit 728952b90a333b5c6f77f06ea9422b94b585878d