refactor: Deprecate reader API for more Pythonic style

[matthewfeickert]

Revise the reader API to be more Pythonic in style as opposed to more C++/ROOT style. Example: pylhe.readLHEWithAttributes -> pylhe.read_lhe_with_attributes.

* Deprecate C style reader API for more Pythonic style
* Ignore flake8 warnings for E501: line too long

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[matthewfeickert]

I tried removing the CODECOV_TOKEN secret to avoid the problem of the April 15th security problems, but it seems that things aren't reporting now. :/

[matthewfeickert]

I tried removing the CODECOV_TOKEN secret to avoid the problem of the April 15th security problems, but it seems that things aren't reporting now. :/

Seems it is still required for uploading the coverage report:

The token below is used exclusively for uploading coverage reports.

[codecov]

Codecov Report

Merging #87 (1f8a012) into master (18d2979) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master      #87   +/-   ##
=======================================
  Coverage   60.69%   60.69%           
=======================================
  Files           2        2           
  Lines         201      201           
  Branches       36       36           
=======================================
  Hits          122      122           
  Misses         72       72           
  Partials        7        7           

Flag	Coverage Δ
unittests	60.69% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/pylhe/__init__.py	66.46% <100.00%> (ø)

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[matthewfeickert]

@8me, @ariaradick, @shantanu-gontia, @eduardo-rodrigues, @fuenfundachtzig, @SundeMarius, @gridge

This is just a heads up that the next release of pylhe will be an API breaking change for the reader API.