more nil checks in plotly sugar

SciNim / nim-plotly

plotly wrapper for nim-lang

https://scinim.github.io/nim-plotly/

MIT License

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more nil checks in plotly sugar #35

Closed Vindaar closed 5 years ago

Vindaar commented 5 years ago

I stumbled on a typo in gridColorY in plotly sugar and added some missing nil checks for Marker causing a SIGSEGV if no marker existed. Also removes a duplicate proc (oops...).