fixes an issue of going up and down in history results in the incorrect order of commands being inserted (nothing happens to the order in the history itself, just when navigating via arrow keys)
* fix: provide correct command when navigating history
previously, the order while navigating history
with the arrow keys would be incorrect
meaning the command you expect if you go u
then go back down would not be there
* chore: update changelog
* feat: add right prompt (closes#111)
* chore: add comment for set right prompt function
* fix: add 1 space at the end of right prompt to fix character cut off
* docs: update doc for prompt function