Feature/ember upgrade

[codecov[bot]]

Codecov Report

Merging #153 (45448aa) into master (7791d42) will not change coverage. The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #153   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            6         7    +1     
  Lines           82       100   +18     
=========================================
+ Hits            82       100   +18     

Impacted Files	Coverage Δ
addon/components/modal-container/index.js	100.00% <100.00%> (ø)
addon/components/modal-wrapper/index.js	100.00% <100.00%> (ø)
addon/components/modal/index.js	100.00% <100.00%> (ø)
addon/helpers/open-modal.js	100.00% <100.00%> (ø)
addon/models/modal.js	100.00% <100.00%> (ø)
addon/services/modal.js	100.00% <100.00%> (ø)
addon/utils/css-transitions/has-transitions.js	100.00% <100.00%> (ø)

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[SergeAstapov]

@josex2r Thanks for working on this!

[SergeAstapov]

@josex2r @xe21500 @adrigzr is there something I can help to push this over the line and get released? I'm happy to help maintaining this addon.

If that could help, I can help and split changes proposed in this PR into smaller PRs that are easier to review - if that can help expedite things.

In addition to general Ember upgrades and transition to Glimmer component, this addon also great candidate for v2 format conversion

[adrigzr]

@etarancon, could you help @SergeAstapov with this? 😄

[SergeAstapov]

@josex2r @etarancon @adrigzr would you like to add me as maintainer of the addon as I can get this, general addon upgrades/maintenance and v2 format conversion done