Read Error rework

[JulianSchmid]

Resolves #16

[codecov]

Codecov Report

Merging #21 (2323e4c) into master (82e959c) will decrease coverage by 0.16%.
The diff coverage is 98.14%.

@@            Coverage Diff             @@
##           master      #21      +/-   ##
==========================================
- Coverage   99.68%   99.52%   -0.17%     
==========================================
  Files          45       48       +3     
  Lines       16428    18237    +1809     
==========================================
+ Hits        16377    18150    +1773     
- Misses         51       87      +36     

Impacted Files	Coverage Δ
src/lib.rs	100.00% <ø> (+0.45%)	⬆️
tests/internet/ip.rs	99.51% <ø> (ø)
tests/packet_decoder/mod.rs	100.00% <ø> (ø)
tests/packet_slicing/mod.rs	98.37% <ø> (ø)
tests/de/mod.rs	97.16% <97.16%> (ø)
tests/errors/mod.rs	98.80% <98.93%> (-0.03%)	⬇️
src/errors.rs	99.39% <99.39%> (ø)
src/de.rs	100.00% <100.00%> (ø)
src/internet/ip.rs	100.00% <100.00%> (ø)
src/internet/ip_authentication.rs	100.00% <100.00%> (ø)
... and 21 more

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[JulianSchmid]

https://github.com/JulianSchmid/etherparse/releases/tag/v0.14.0 implemented a better version of this change.