Julia

- added dependency on PlotUtils
- BREAKING: removed DataFrames support (now in StatsPlots.jl)
- BREAKING: removed boxplot/violin/density recipes (now in StatsPlots.jl)
- GR:
- inline iterm2 support
- trisurface support
- heatmap fix
- PyPlot:
- ijulia display fix
- GLVisualize:
- first try with shapes
- iter_segments improvements
- bar_width support
- horizontal bars
- improve tick display
- better shape handling in pyplot, plotly
- improved padding calcs
- internal reorg of _plots method, add pipeline.jl

---

- GR: LaTeX support
- Changed docs url to juliaplots.github.io
- added `contourf` seriestype
- allow `plt[1]` to return first Subplot
- allow `sp[1]` to return the first Series of the Subplot
- `series[k]` now passes through to `series.d[k]`
- allow calling `plot!(sp, ...)` to update a target Subplot
- PyPlot: zorder fix
- new DataFrames logic/recipe: more flexible/robust and allow Symbols for:
- `(:fillrange, :line_z, :marker_z, :markersize, :ribbon, :weights, :xerror, :yerror)`
- new `display_type` and `extra_kwargs` plot attributes
- surface fix

- added snooped precompiles, but left commented out
- GR fixes: markersize, shapes, legends
- fixes to recipes
- turned on Appveyor

- rebuild violin and boxplot recipes
- "plot recipes"
- `cgrad` method for easy color gradient creation
- improvements to inset subplots
- Segments and iter_segments for NaN-separated vectors
- `bar` recipe now creates a `shape` series
- writemime fix for Interact.jl
- `link = :square` option
- !!! set `shape` attributes with line/fill, NOT marker/markerstroke !!!
- basic DPI support
- moved chorddiagram to PlotRecipes
- GR:
- use temp files for img output
- basic support for marker strokes and other marker fixes
- PyPlot:
- Switch to recipes for bar, histogram, histogram2d
- GLVisualize
- subplots
- path/scatter and path3d/scatter3d
- initial drawing of axes
- many smaller fixes and improvements

- line_z arg for multicolored line segments
- pyplot
- line_z (2d and 3d)
- pushed all fig updates into display pipeline
- remove native sticks/hline/vline in favor of recipes
- unicodeplots cleanup, ijulia fixes, ascii canvas
- `curves` series type
- `iter_segments` iterator
- moved arcdiagram out and into PlotRecipes (thanks diegozea)
- several other fixes/checks