Fix error message bugs and formatting in lines.py; modified patch 1594894
Patch 1591716 by Ulf Larssen to fix bug with axis('equal')
Make colorbar track changes in mappable to which it is connected.
fixed a verbose report error
Fixed indentation
Added alpha handling to colorbar.
Fixed bug in axes.py that broke Numeric compatibility.
fixed subplots_adjust docstring bug
new example
