Stop npm deprecate now all modules are deprecated (hyperledger-archiv… …es#4690) Signed-off-by: Simon Stone <sstone1@uk.ibm.com>

[Master] expose clientIdentity in getNativeAPI (hyperledger-archives#… …4617) Signed-off-by: Dave Kelsey <d_kelsey@uk.ibm.com>

[Master] Move experimental features to 0.20 (hyperledger-archives#4593) Signed-off-by: Dave Kelsey <d_kelsey@uk.ibm.com>

[0.19.x] cache enableHistorian flag (hyperledger-archives#4574) Signed-off-by: Dave Kelsey <d_kelsey@uk.ibm.com>

[Master] ensure logging files are flushed for CLI (hyperledger-archiv… …es#4480) Signed-off-by: Dave Kelsey <d_kelsey@uk.ibm.com>

[Master] Experimental Pluggable Query Handler (hyperledger-archives#4537 ) This is an experimental feature for composer and as such is not documented. Signed-off-by: Dave Kelsey <d_kelsey@uk.ibm.com>

[0.19.x] Rest server can be terminated by client (hyperledger-archive… …s#4531) A client listening on a web socket can terminate the rest server if it is badly behaved and doesn’t cleanly disconnect Signed-off-by: Dave Kelsey <d_kelsey@uk.ibm.com>

[Master] Allow txid to be passed to query requests (hyperledger-archi… …ves#4500) Signed-off-by: Dave Kelsey <d_kelsey@uk.ibm.com>

[0.19.x] Allow txid to be passed to query requests (hyperledger-archi… …ves#4499) Signed-off-by: Dave Kelsey <d_kelsey@uk.ibm.com>

[Master] Improve perf logging (hyperledger-archives#4495) * Log connect/disconnect, improve query perf log Signed-off-by: Dave Kelsey <d_kelsey@uk.ibm.com> * Improvements based on example Signed-off-by: Dave Kelsey <d_kelsey@uk.ibm.com>