Some clean up

[codecov-io]

Codecov Report

Merging #8 into master will decrease coverage by 0.03%. The diff coverage is 100%.

@@            Coverage Diff            @@
##           master      #8      +/-   ##
=========================================
- Coverage   95.14%   95.1%   -0.04%     
=========================================
  Files           6       6              
  Lines         247     245       -2     
=========================================
- Hits          235     233       -2     
  Misses         12      12

Impacted Files	Coverage Δ
src/multilevel.jl	73.8% <100%> (ø)	:arrow_up:
src/classical.jl	100% <100%> (ø)	:arrow_up:
src/strength.jl	97.22% <100%> (ø)	:arrow_up:
src/splitting.jl	100% <100%> (ø)	:arrow_up:

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[coveralls]

Coverage decreased (-0.04%) to 95.102% when pulling b3e9bdb99396549e3929d3278fd8610dddeaa609 on strength into b025aef8ba20be4843778528911e770a63e5d3d6 on master.

[coveralls]

Coverage decreased (-0.04%) to 95.102% when pulling 3a914bf484e5177bf77c1d7ab425c4d25766b509 on strength into b025aef8ba20be4843778528911e770a63e5d3d6 on master.

[coveralls]

Coverage decreased (-0.04%) to 95.102% when pulling 78c4a87a2b509a29102d87ea3fd39574982e1393 on strength into b025aef8ba20be4843778528911e770a63e5d3d6 on master.