tsipkens/atems: v1.1

The program performs an analysis of TEM images to determine aggregate properties, with a focus on characterizing soot.

This release is associated with an article accepted for publication in Powder Technology (https://doi.org/10.1016/j.powtec.2021.04.026) adding support for a trained convolutional neural network. This release also includes minor fixes and minor feature updates (e.g., the addition of the textdone function).