Add commit template

.commit_template

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+
+
+# -----------------------------------------------------------------
+# Write your entire commit message above this line.
+# 
+# The first line should be a quick description of your latest progress. 
+# Then leave a blank line. 
+# Then, taking as many lines as you want, reflect on the current state 
+# of your data science project. Write about whatever you want; here are 
+# a few suggestions: 
+# 
+# - Which recent successes are you proud of?
+# - What are you currently stuck on? Are there parts of this project
+#   that you're worried about, or which you don't know how to do?
+# - Has your work sparked any new ideas or interests?
+# - Have you learned any new skills?
+