Fix mistakes in .vimrc

- Use setlocal in autocommands
- Set noexpandtab when editing makefile
Create storage_path directory if necessary
Version 1.3.0

Changelog:
- Create storage_path directory if necessary

Signed-off-by: Emil Lundberg <lundberg.emil@gmail.com>
Merge version 1.3.0 into package
Bump pkgver and pkgrel
Remove update-checksums.sh

For this package, its functionality is provided by `updpkgsums`.
Release 1.3.0-1