* Load/save JSON config file did not work
* Added rfc7951 parameter to `clixon_json_parse_string()` and `clixon_json_parse_file()`
* If set, honor RFC 7951: JSON Encoding of Data Modeled with YANG, eg it requires module name prefixes
* If not set, parse as regular JSON
* Test: added test_db.sh for datastore format tests
NETCONF hello errors, such as wrong session-id, prefix, namespace terminates session
* Instead of returning an rpc-error reply
Changed YANG PATCH enabling:
* Now: `./configure --enable-yang-patch`
* Before: set YANG_PATCH constant in `include/clixon_custom.h`
Refactored Makefile for static linking
* Fixed: [Performance issue when parsing large JSON param](https://github.com/clicon/clixon/issues/266)
* Moved strlen() from for end condition
* Fixed debugging of xpath parser