Fix/status type

[Andreadinenno]

• Fixes Tighter type for status argument in AssetToken.sol #157
• Adds an owner() view function to retrieve contract owner address
• Adds Github Action to publish NPM package when pushing release to master

All Submissions:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Does your submission pass tests?
• Have you lint your code locally prior to submission?

[codecov]

Codecov Report

Merging #158 into develop will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop     #158      +/-   ##
===========================================
+ Coverage    97.51%   97.53%   +0.02%     
===========================================
  Files            2        2              
  Lines          201      203       +2     
  Branches        34       34              
===========================================
+ Hits           196      198       +2     
  Misses           5        5              

Flag	Coverage Δ
#unittests	97.53% <100.00%> (+0.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
contracts/AssetToken.sol	97.05% <100.00%> (+0.03%)	⬆️

---

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 ca54a3e...8f7b846. Read the comment docs.

[Shirikatsu]

NOICE