[Dvipng] question about change since dvipng-1.09

[Darren Dale]

Hello,

I am a developer on the matplotlib plotting library for python. I recently 
updated from dvipng-1.09 to 1.10, and noticed a difference in the way our 
latex expressions get rendered into our figures. There are two examples 
attached, where I have loaded a png file into an array and then plotted the 
array as an image, one with dvipng 1.09 and one with dvipng-1.11. Could 
anyone help me understand what has changed since 1.09?

Thank you,
Darren

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