Makefile: add bump-version target

Author: rnovatorov

Makefile

@@ -50,3 +50,13 @@ dist.tar: dist
 .PHONY: dist
 dist:
 	pipenv run python setup.py bdist_wheel
+
+.PHONY: bump-version
+bump-version:
+ifndef V
+	$(error V is not defined)
+endif
+	sed -i 's/__version__ = "[0-9].[0-9].[0-9]"/__version__ = "$(V)"/g' enapter/__init__.py
+
+	grep --files-with-matches --recursive 'enapter==[0-9].[0-9].[0-9]' examples \
+		| xargs -n 1 sed -i 's/enapter==[0-9].[0-9].[0-9]/enapter==$(V)/g'