Winston v0.11.8 [51c21a9]

plot() improvements

- Better handling of complex arguments.
- Better handling of matrix arguments.
- Merge `plot(func, a, b)` behavior into main plot function, and remove
  `plot([func...], a, b)` functionality (closes JuliaGraphics#146).

reinstate WinstonDisplay to julia 0.3

a984d96 was too aggressive. Fixes JuliaGraphics#137.

workaround for new repl display issue

If any command was entered into the repl before
`using Winston`, then no plot window would appear.

fix julia 0.2 breakage by a984d96

julia-0.2 fixes

Winston v0.8.1 [ba86e42]

doc: add fun/imagesc

Winston v0.7.2 [a8039a5]