Fix features - dependencies - timezone - variable scope

[flopal]

Hi,

I use node v14.5.0 and npm 6.14.8, if I can help to debug.

This PR updates a lot of things.

1. dependencies. I used npm-check library to upgrade all dependencies and to fix some audit issues. see commit
   6f2617b.

2. timezone. When I was running the npm test command, some tests failed about the timezone. I fixed it by replacing tz-offset to moment-timezone and updating some files (see the list item in commit 72a454a and change in commit 4f26623).

3. variable scope. I replaced all var to let or const (depend on the variable update). See commit 27e1140.

4. readme. As I said on 1), I changed the timezone library, so I updated the link / Text in the readme. See commits b487616 and 13f9022 (bad copy-paste in the first commit)

I ran again the npm test to check if everything is alright: all tests are passed, but the first test can be failed (or be passed) during the first iteration (depend on delay to reach the result [deamon.js]).

[coveralls]

Pull Request Test Coverage Report for Build 360

• 64 of 64 (100.0%) changed or added relevant lines in 9 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 357:	0.0%
Covered Lines:	274
Relevant Lines:	274

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💛 - Coveralls

[abdurrahmanekr]

Hey hi 👋, this repo is insufficient on timezone. If this PR solves this problem, is there any reason not to merge it?

[flopal]

Hi ! 👋

Thank you for your interest to my PR (and this project of course) 🙏

I guess this project is not maintained or it takes time to find another maintainer. Check this issue #255

Moreover, my PR could be better - replace moment-timezone to another package (refer to this status on the momentjs website).

• I worked with Luxon and it's pretty like momentjs - it's a tank !
• Tz-data could be a better alternative. 💪

I'm waiting for news about this project to know if this project continues or not. I will update my PR if it continues, do nothing (leaves my PR like that) otherwise.

[merencia]

Hi there!

I'm really sorry for the delay.

@flopal thanks for you PR.

[flopal]

Don't worry about that @merencia, I understand!

I'm glad to see you back to add a new version on this repo.