* Fixed: [Error message seen twice in some cases](https://github.com/clicon/clixon/issues/325)
* Extended `-l` command-line option to all clixon commands with a `none` option, eg `-l n` directs logging to `dev/null`
* Fixed: YANG key list check bad performance
* List key check did unique "xpath" lookup instead of direct child traverse
* Fixed: YANG unique single schema-nodeid required "canonical" namespace
* E.g., `a/b` did not work even if there was default namespace in XML
* Memory leak in xpath parser
Save state of netconf chunked framing between inputs
Treat EBADF in internal protocol (triggered by freebsd+notifications)
Test: chunked encoding: use printf instead of echo
* Some complexities in Section 3.7 Lexical Structure of XPath 1.0 spec
* There used to be some cornercases where function-names could not be used as nodes
* For example, `node()` is a nodetest, so `/node/` caused an error.
* In the grammar these include: axisnames, nodetests, functionnames
* The NCNames vs functionnames is now impölemented according to the lexical structure section
* Instead of removing YANG which is disabled by `if-feature`, replace it with an yang `anydata` node.
* This means XML specified by such YANG is ignored, and it is not an error to access it
* Note the similarity with `CLICON_YANG_UNKNOWN_ANYDATA`
* First hello is 1.0 EOM framing, then successing rpc is chunked framing
* See
* [Netconf framing](https://github.com/clicon/clixon/issues/50), and
* [Clixon does not switch to chunked framing after NETCONF 1.1 is negotiated](https://github.com/clicon/clixon/issues/314)
* C:
* Moved netconf framing code from netconf application to clixon lib
* Test:
* New expecteof_netconf and adjusted other expect scripts to handle NETCONF 1.1 framing
* See [Clixon does not switch to chunked framing after NETCONF 1.1 is negotiated](https://github.com/clicon/clixon/issues/314)
* To enable Netconf 1.1, set `NETCONF_1_1_ANNOUNCE`
* This means that two variants are supported:
* unique "a b c", ie multiple direct chidlren
* unique "a/b/c", ie single descendants
* RFC 7950 Sec 7.8.3 is somewhat unclear
* The combination is not supported
* Netconf data-not-unique info changed to return schema nodes instead of XML for RFC7950 compliance
* Note that edits to the candidate database or locks will be lost
* To force the CLI to exit if backend restarts, undef `PROTO_RESTART_RECONNECT`
* This is an effect of the fix of [Broken pipe error seen in client (cli) when backend restarts and CLICON_SOCK is recreated](https://github.com/clicon/clixon/issues/312), the CLI behavior on backend restart is changed.
* Added `eof` parameter to `clicon_rpc()` and `clicon_rpc1()` and error handling modified
* 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
