Peter Sooley
Peter Sooley
Furthering work for JSON compatibility as described in #127, this change adds support for the `json_error_position` function used to find the error in invalid JSON values. 
Partial includes are found using relative paths, but relies on the logical `path` variable rather than the actual `source_path`. The `Chapter::source_path` property [was introduced](https://github.com/rust-lang/mdBook/commit/7aff98a8596bd7d52a54f7729f210b53566b9f8c) to render URLs differently from how...