bugfix in doc schema generator

Plotly.js changed some of the formatting in the schema, which caused a build issue here.

Maintenance

New features:

• you can now call plot(::AbstractVector{::<:AbstractVector}, ::AbstractMatrix) and each element of the first array will be matched with a column of the second. See (#128)

Under the hood:

• prepare for InteractNext by using defining a js_default variable (#127)
• Fix typo in docs (see #129)

Silence warnings

Remove deprecation warning from using Base.Iterators functions (filter, cycle, take, ...) and clean up testing infrastructure

Recession bands for figures with subplots

New features

• add_recession_bands! now supports plots with more than one subplot

Autodownload plotly.js

Improvements

• When the package is loaded, if plotly.js is not found Julia will attempt to download the latest from the plotly CDN

DataFrame API

• New convenience API including...
  • plot(f, x0, x1): plotting a function from x0 to x1
  • plot(x, y): construct a plot from two arrays
  • plot(df::AbstractDataFrame, ...; group=nothing...): construct a plot using columns of a DataFrame, optionally grouping by a single column to construct multiple traces
• New doc browser: call PlotlyJS.docs() to open an Electron window with a less overwhelming take on the plotly.js chart attribute reference.