Remove normalized paths from generated cache

[mistic]

This PR removes normalized paths from the generated cache-loader caches as it would break the watch under windows due to a bug on chokidar/watchpack.

/CC @evilebottnawi

[codecov]

Codecov Report

Merging #74 into master will decrease coverage by 0.32%.
The diff coverage is 50%.

@@            Coverage Diff             @@
##           master      #74      +/-   ##
==========================================
- Coverage   58.13%   57.81%   -0.33%     
==========================================
  Files           2        2              
  Lines         129      128       -1     
  Branches       20       20              
==========================================
- Hits           75       74       -1     
  Misses         46       46              
  Partials        8        8

Impacted Files	Coverage Δ
src/index.js	58.26% <50%> (-0.33%)	⬇️

---

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[codecov]

Codecov Report

Merging #74 into master will decrease coverage by 0.32%.
The diff coverage is 50%.

@@            Coverage Diff             @@
##           master      #74      +/-   ##
==========================================
- Coverage   58.13%   57.81%   -0.33%     
==========================================
  Files           2        2              
  Lines         129      128       -1     
  Branches       20       20              
==========================================
- Hits           75       74       -1     
  Misses         46       46              
  Partials        8        8

Impacted Files	Coverage Δ
src/index.js	58.26% <50%> (-0.33%)	⬇️

---

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 1369c05...bf61ab1. Read the comment docs.