Fixed bug with not passing down isHtml to renderer
Fixed bug with not passing down isHtml to renderer

- UsingTemplate & UsingTemplateFromFile now correctly passes the isHtml
  parameter down to the renderer

shabbirh/FluentEmail,yannduran/FluentEmail,anthonyvscode/FluentEmail,lukencode/FluentEmail,lukencode/FluentEmail,anthonyvscode/FluentEmail,bjcull/FluentEmail