feat(state): Safely added ability to disable semicolons

[Mouradif]

Followed @eddiesholl 's advice for the state.terminate() method in this comment : #20 (comment)
as well as @davidbonnet 's warning on sensitive characters and on that, I followed instructions from eslint where the semicolon would be put right before a (, [ or a - on the next statement

fix #20

[codecov-io]

Codecov Report

Merging #73 into master will decrease coverage by 0.08%.
The diff coverage is 95.83%.

@@            Coverage Diff             @@
##           master      #73      +/-   ##
==========================================
- Coverage   95.45%   95.36%   -0.09%     
==========================================
  Files           1        1              
  Lines         550      561      +11     
==========================================
+ Hits          525      535      +10     
- Misses         25       26       +1

Impacted Files	Coverage Δ
src/astring.js	95.36% <95.83%> (-0.09%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update bcb9c0d...e8ffc2a. Read the comment docs.

[davidbonnet]

Thanks @Mouradif for suggesting these changes.

Quickly added some tests that stress the semicolon placement algorithm. Suggested approach is to have a special write method used in places where one of these characters is inserted: '[(+-'.

Note also that writeToStream, writeAndMap, and writeToStreamAndMap should apply the same logic, thus requiring perhaps a formatCode method to be used in all three.