.editorconfig

templater: add public interface returning a set of resource keys

The next patch depends on knownresourcekeys(), and there's no reason to
keep availableresourcekeys() private.

# See http://EditorConfig.org for the specification

root = true

[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true

[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true