Remove trailing space characters and add a few missing newlines

[aaronfranke]

This PR does a few things related to file formatting:

• Remove trailing space characters. These are useless and just take up disk space.

• Ensure text files end in trailing newline characters, except for JSON files. These are important for POSIX-compliance, however, some JSON tools automatically remove them, so for JSON files we make an exception. I also didn't add them to .expected since I wasn't sure about those files. In the end the only places where newlines were missing in files where they should exist was one Python file and one Bash file.

I made these changes using a script. In case I need to rebase this PR, it is very easy to re-run the script I used. Additionally, if desired, I can add the script to the CI checks, so that these formatting checks are done automatically.

[coveralls]

Coverage remained the same at 93.803% when pulling ed52338 on aaronfranke:formatting into 8954092 on open-source-parsers:master.

[dota17]

Thanks, these changing looks good to me.

Actually, the Travis CI will run clang-format script, so I don't think we need another formating script now.
It seems that our clang-format script don't recognize these trailing space characters your script found, just because they follow the different rules, so I am thinking if it's possible to apply your format script to clang-format script instead of having two scripts at the same time.

[aaronfranke]

I could add it to run-clang-format.sh if you want, but there's no way for the clang-format tool itself to do this as far as I know.

Also, I noticed that the scripts are in a folder called .travis_scripts, but it doesn't seem that this repo has Travis CI enabled. If you want I can try making the scripts run on GitHub Actions CI.

[dota17]

but it doesn't seem that this repo has Travis CI enabled

what you found has happened for a couple of days(or months?), Travis CI always exists and run, (see this https://travis-ci.org/github/open-source-parsers/jsoncpp/builds/727220741), but doesn't show up in the front-end CI checklist, I haven't figured it out yet, @BillyDonahue can you take a look at this?
@aaronfranke you can find the CI run clang-format script at here.

If you want I can try making the scripts run on GitHub Actions CI.

we haven't discussed to use Actions CI, so I am not sure about this point.

[BillyDonahue]

clang-format is just for C++. I think if we were going to enforce elimination of trailing whitespace in other kinds of files, we should name that rule something else. I'm not sure what it has to do with POSIX compliance, though.

It's probably fine as a one-shot cleanup. We'll just have to watch incoming PRs for trailing whitespace.

[aaronfranke]

Trailing whitespace is not a matter of POSIX compliance, newlines are.

The script I used is similar to this one, but we would want to tailor it for this repo if it's desired to have the script.

[BillyDonahue]

Trailing whitespace is not a matter of POSIX compliance, newlines are.

I didn't know POSIX had an opinion. It does!

The script I used is similar to this one, but we would want to tailor it for this repo if it's desired to have the script.

We'd have to be careful about dos2unix and recode as deps. The tests will sometimes be deliberately messy or ill-formed, so we'd have to be careful not to "fix" the test input data.

[aaronfranke]

Any update? This should be good to go. CC @baylesj and @BillyDonahue

Travis completed successfully if you click "Details", but it's not updating here on GitHub.

[cdunn2001]

Rebased and merged. Sorry for delay.