refactor: droped webpack@4

[cap-Bernardito]

This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

droped webpack@4

Breaking Changes

Yes
Changed inline multiple exports syntax. See readmy
Droped filename template support for export names and aliases

Additional Info

Filename templates are used on rare occasions and it is difficult to come up with a use case where they would be irreplaceable

[codecov]

Codecov Report

Merging #58 (78b65d3) into master (b82ab5a) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master       #58   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            3         3           
  Lines          122       121    -1     
  Branches        46        47    +1     
=========================================
- Hits           122       121    -1     

Impacted Files	Coverage Δ
src/index.js	100.00% <100.00%> (ø)
src/utils.js	100.00% <100.00%> (ø)

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