Swiping from a letter to hyphen and back to letter to introduce the hyphen in the middle of the word. Romanian language is formed by many words like this.

I also suggest to eliminate the space between letters, there is need for these and integrate letters like ă, â, î, ș, in the Romanian keyboard. It's time consuming for a faster typing to press always the symbol button to pop-up these letters. These letters can be changed with the following punctuation marks: [, ', /.

I attached a screen shot from swype keyboard designed by Nuance where I found the perfect configuration.

Where is the question and exclamation mark?

Adding the "add to dictionary" option will improve the words library.