Merge pull request #19 from jverzani/devel

replace :: with _ in kind
Merge pull request #21 from jverzani/jv

Jv Merge TkExtras into Tk package
Merge branch 'jv'
remove debugging call
add sketch example
Update for new BinDeps
remove dependency on CairoRenderer, which is winston-specific
sorry if this breaks anything; I'm sure it can be patched up easily
add resize handler for Canvas and redraw hook
clean up README
a couple small improvements:
. increase poll rate
. show exceptions that happen during callbacks
. width and height for Canvas
. destroy Canvas' Cairo resources sooner during resizing
report errors initializing Tk
update for Base.Graphics
Add bindings for mouse wheel
Advertise jverzani's documentation
update core.jl

use uncompressed_ast (not uncompress_ast)
Add ability to create icons programmatically
Make Canvas from a TTk_Container
unsafe_ref->unsafe_load
tk_bind for Canvas type
Rename bindwheel -> tk_bindwheel