Fix footer

- Copyright date is updated to when this new book started (2022)
- Inner Product is the publisher
- Styling for footer
- Include license
- Give attribution to Scala with Cats

src/meta/metadata.yaml

@@ -4,7 +4,7 @@ subtitle: "In Scala with Cats"
 author: "Noel Welsh"
 date: "February 2024"
 tocDepth: 1
-copyright: "2014-24"
+copyright: "2022-24"
 figPrefixTemplate: "$$i$$"
 eqnPrefixTemplate: "$$i$$"
 tblPrefixTemplate: "$$i$$"

src/scss/common/footer.scss

@@ -0,0 +1,57 @@
+footer {
+    margin-top: 2 * $spacer;
+    padding: 4 * $spacer 0;
+
+    background: $primary;
+    color: $white;
+
+    a { color: $white; }
+
+    h1,h2,h3,h4,h5,h6 {
+        color: $white;
+    }
+
+    .footer-brand {
+        margin: 0;
+    }
+
+    .sitemap {
+        margin: 0 0 $line-height-computed;
+
+        font-size: .9em;
+
+        ul {
+            margin: 0;
+        }
+
+        li {
+            text-align: center;
+        }
+
+        h5 {
+            margin-top: $line-height-computed;
+            text-align: center;
+            a { font-weight: bold; }
+        }
+
+        a {
+            display: block;
+            overflow: hidden;
+            text-overflow: ellipsis;
+            white-space: nowrap;
+            color: #fff;
+            font-weight: 200;
+            text-decoration: none;
+
+            &:hover {
+                text-decoration: underline;
+            }
+        }
+    }
+
+    .small {
+        margin: 0 0 $line-height-computed;
+        font-size: .8em;
+        font-weight: 200;
+    }
+}