bug: syntax hi-lighting for priority fails when un-marking a task as done

[jpouellet]

Steps to reproduce:

test-todo.txt:

(A) I was *NOT* done
x 2014-07-25 (A) I was done

todotxt-machine -f ./test-todo.txt

• select done item (j)
• toggle mark-as-done (x)

Notice that it should be red like the item above it, but it is not until you restart todotxt-machine with the resulting file.

[AnthonyDiGirolamo]

Thanks for catching this! I will push out a new pip package after I fix a couple more bugs.