refactor: filename option

[alexander-akait]

BREAKING CHANGE: filename` is changed, you need to return path with placholders

This PR contains a:

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

Motivation / Use-Case

to avoid problems with immutable files

Breaking Changes

Yes:

• filename: Function should return filename with placeholders to avoid problems with immutable files
• the [dir] placeholder was replaced on the [path] placeholder
• added [fragment] and [base] placeholders

Additional Info

No

[codecov]

Codecov Report

Merging #195 into master will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #195      +/-   ##
==========================================
+ Coverage   98.75%   98.78%   +0.02%     
==========================================
  Files           4        4              
  Lines         161      164       +3     
  Branches       47       46       -1     
==========================================
+ Hits          159      162       +3     
  Misses          1        1              
  Partials        1        1              

Impacted Files	Coverage Δ
src/index.js	98.44% <100.00%> (+0.03%)	⬆️

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