Updates of the app and SDK for iOS

Today we release FBReader 1.1.4 and FBReader SDK 0.99.4 for iOS.

• Fixed letters truncation in some fonts, e.g. Academy Engraved LET
• Vertical text scrolling speedup
• The app adds SVG images support
• The SDK customers can add new image formats via third-party libraries; our sample code provides SVG support via SVGKit