add support for rendering array of hotspots

[jstorm31]

I need to render an array of dynamic hotspots in a project where I use the library:

<Pannellum ...>
   <Pannellum.Hotspot ... text="static hotspot" />
   {hotspots.map(hotspot => <Pannellum.Hotspot {...hotspot} />}
</Pannellum>

The result has been an error, because current implementation does not take an array as a child of Pannellum component in account.

So I flatmapped children to be a 1D array of hotspots.

[codecov-io]

Codecov Report

Merging #66 into master will not change coverage. The diff coverage is 0%.

@@          Coverage Diff           @@
##           master     #66   +/-   ##
======================================
  Coverage    1.21%   1.21%           
======================================
  Files           6       6           
  Lines        2063    2063           
======================================
  Hits           25      25           
  Misses       2038    2038

Impacted Files	Coverage Δ
src/elements/Pannellum.js	11.66% <0%> (ø)	:arrow_up:

---

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 cd91004...d83d88b. Read the comment docs.

[coveralls]

Pull Request Test Coverage Report for Build 138

• 0 of 1 (0.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 0.852%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/elements/Pannellum.js	0	1	0.0%
<!--	Total:	0	1	0.0%	-->

Totals
Change from base Build 137:	0.0%
Covered Lines:	25
Relevant Lines:	2063

---

💛 - Coveralls

[farminf]

It's already accepting an array, if you need to pass a nested array, you can make it flat before, then pass it to the component, honestly, I don't see any value in this because it is a very edge case.

[jstorm31]

Yes, I can prepare an array of hotspots and then pass it as a child, but the way above seems more convenient to me. Moreover, the one-line change won't add any complexity and will still work for other cases.

[farminf]

ok, since it hasn't any breaking changes and makes more convenient, I merge this

[jstorm31]

Great, thanks! Are you going to release it or wait for more changes at once?

[farminf]

It's on develop now, yeah I'll wait since it's minor.