Make minimal required version Python 3.8

Author: wouterkool

README.md

@@ -20,10 +20,10 @@ For more details, please see our paper [Attention, Learn to Solve Routing Proble
 
 ## Dependencies
 
-* Python>=3.6
+* Python>=3.8
 * NumPy
 * SciPy
-* [PyTorch](http://pytorch.org/)>=1.1
+* [PyTorch](http://pytorch.org/)>=1.7
 * tqdm
 * [tensorboard_logger](https://github.com/TeamHG-Memex/tensorboard_logger)
 * Matplotlib (optional, only for plotting)

environment.yml

@@ -3,7 +3,7 @@ name: attention_tsp
 channels:
 - pytorch
 dependencies:
-- python>=3.6
+- python>=3.8
 - anaconda
 - tqdm
 - pytorch