Extra white space after apostrophe

Example markdown showing the error:

**What shall we write today?**
Nothing you need. Everything you don't.

Resulting appearance on right shows a long and incorrect space after the apostrophe in "don't".


This occurs on most but not all styles (above was **clearness dark**) but it is not triggered by the **github** style. See below that in the github style the space is not present.



Other diagnostic details:
Os: Windows 8.1
Haroopad Version: 0.13.1 64 bit.