.editorconfig

manifest: introduce memmanifestctx and memtreemanifestctx

This introduces two new classes to represent in-memory manifest instances.
Similar to memchangectx, this lets us prepare a manifest in memory, then in a
future patch we will add the apis that can commit this in memory structure.

# 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