using terminalextensions breaks plots with plotlyjs backend in 0.6

[sbromberger]

With TerminalExtensions, attempts to plot(1:10) with the plotlyjs backend result in

Error showing value of type Plots.Plot{Plots.PlotlyJSBackend}:
ERROR: MethodError: no method matching handle_new_from_data(::String)
The applicable method may be too new: running in world age 21869, while current world is 21889.
Closest candidates are:
  handle_new_from_data(::AbstractString) at /Users/bromberger1/.julia/v0.6/Rsvg/src/calls.jl:69 (method too new to be called from this world context.)
  handle_new_from_data(::AbstractString, ::Gtk.GLib.GError) at /Users/bromberger1/.julia/v0.6/Rsvg/src/calls.jl:61 (method too new to be called from this world context.)

When TerminalExtensions is not loaded via ~/.juliarc.jl, plots work.