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Feat
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- (drw): Update the `index` GUI of the plot.
- (appveyor): Drop `appveyor` in favor of `travis`.
- (travis): Update travis configuration file.
- (plot): Add node link and id in graph plot.
Fix
~~~
- (drw): Render dot in temp folder.
- (plot): Add `quiet` arg to `_view` method.
- (doc): Correct missing gh links.
- (core) :gh:`17`: Correct deprecated Graph attribute.