Merge upstream updates (#2)

* fix(#744): Escape special characters in title (#745)

* add matt artist as sponsor

* Fix margin top alignment issue on Safari (#750)

* Update README.md

* Update README.md

* Update README.md

* Update README.md

Co-authored-by: Dmitry <dmitry.b.danilov@gmail.com>
Co-authored-by: Dean Attali <dean@attalitech.com>
Co-authored-by: Amy Troschinetz <lexicalunit@lexicalunit.com>
Co-authored-by: Dean Attali <daattali@gmail.com>

assets/css/beautifuljekyll.css

@@ -311,7 +311,7 @@ img {
   position: absolute;
   left: 50%;
   width: 3.125rem;
-  margin-top: 3.1rem;
+  bottom: -1.5rem;
   transition: opacity 0.5s ease-in-out;
   -webkit-transition: opacity 0.5s ease-in-out;
   -moz-transition: opacity 0.5s ease-in-out;
@@ -349,6 +349,7 @@ img {
 @media (min-width: 1200px) {
   .navbar-custom.top-nav-regular .avatar-container {
     width: 6.25rem;
+    bottom: -1.9375rem;
   }
 
   .navbar-custom.top-nav-regular .avatar-container .avatar-img-border {