v4.7.2

Fixed

• On openccu-lite the metadata file was written once per interface at every
  start (metadata saved to …/ccu_<host>.json, four lines within a second
  on a system with four interfaces), although nothing had changed. The
  system's stream hands the connection every interface's whole device list
  when it connects, in the shape of a newDevices call, and the connection
  saved whenever that list was not empty - on a CCU newDevices only ever
  names devices the connection did not know. The file is now written only
  when a device is new or its data changed, a burst of changes is one write
  (and one log line), and the cache files (metadata, names, values) are
  written atomically - a temporary file and a rename - so a power cut while
  writing leaves the old file, not a truncated one.
• On openccu-lite the start log's Interfaces: line listed ReGaHSS, right
  after the line saying the system has no ReGaHSS; it leaves it out now (the
  mqtt node's per-interface counters as well). Log and dialog texts say "the
  system" where they said "the box".

Changed

• The README names RedMatic 9.15.1 as the version whose token makes lite-rpc
  the default on the system (not 9.13).
• The release workflow's flow-library step no longer trusts the library's
  "already at latest version" while its page still shows the previous
  release; it asks again after 2, 5, 10 and 20 minutes and warns only after
  that.

Commits since v4.7.1

• 4.7.2 - one metadata write per start, the Interfaces line on openccu-lite (033a8f5)
• docs(changelog): 4.7.2 (4b9af9e)
• ci(release): the flow-library refresh waits out the library's lagging npm cache (6ac88d0)
• docs(readme): the addon token on openccu-lite comes with RedMatic 9.15.1 (687e8e1)
• test: the mocha suite gets a temporary Node-RED userDir, so no spec writes into the repository (51b083a)
• fix(cachefile): an atomically written cache file keeps its mode (69c017a)
• fix(connection): on openccu-lite the Interfaces line leaves ReGaHSS out, and the log says "the system" (998dc3c)
• fix(connection): one metadata write per start, atomic, and none when nothing changed (444dee7)
• test(lite): invented device addresses in the lite-rpc value tests (5a7a051)