2.3.1
* Correct minor bugs (alert window)
2.3
* Add confidence map for ALL algorithms
* Improve speed for GMM confidence map
* Correct bugs while using model
2.2
* Add confidence map for GMM classifier
* Remember last saved dir
2.1.2
* Add saving option to Confusion Matrix Menu
* Debug when layer is OSM or online background
* Add instructions for installing scikit-learn when choosing RF, SVM, or KNN
2.1.1
* Automatic adding to processing tool
* Alert user when missing scikit-learn
2.1
* Add filters (median/closing) to processing tool
* Add learning and classification to processing tool
2.0.3
* Correct bug with SPLIT to export confusion matrix.