Changes since HeliBoard 1.3-beta1:
- update Serbian Cyrillic layout by @markokocic (#704, #705)
- update Estonia layout by @tenextractor (#693)
- fix duplicate entries in clipboard history by @codokie (#616, #680)
- only add text entries to clipboard history by @codokie (#711)
- better images in metadata by @RHJihan (#713)
- properly set color of icons in toolbar selection dialog by @codokie (#715, #716)
- other fixes (#684, #723 and more)