fixed typos

[aurorarossi]

I fixed the following typos:
ga in g

and the repetition

e ∈ edges(g) or e ∈ edges(g)

in

e in edges(g) or e ∈ edges(g)

[codecov]

Codecov Report

Merging #182 (59d00e7) into master (1783617) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #182   +/-   ##
=======================================
  Coverage   97.47%   97.47%           
=======================================
  Files         109      109           
  Lines        6349     6349           
=======================================
  Hits         6189     6189           
  Misses        160      160           

[simonschoelly]

Thanks, these changes look good.

On a side note, it is kind of incorrect, that edges calls has_edge - this is neither the case for AbstractGraph nor for Simple[Di]Graph.

It would possibly be worth to think about having an implementation edges(g::AbstractGraph) that relies on calls to has_edge by default while other types of graphs are free to implement their own more efficient edges function.
Also, this approach would not work for multigraphs though.