code: function findCompressionByName(encodingName) {
          for (var i = 0; i < compressions.length; i++) {
              if (compressions[i].encodingName === encodingName)
                  return compressions[i];
          }
          return null;
      }
docs: Compression lookup by name.
  @param {string} encodingName
  @returns {Compression}