refactor(loop) separate client and loop

README.md

@@ -33,6 +33,8 @@ From LuaRocks:
 
 See [https://xhaskx.github.io/luamqtt/](https://xhaskx.github.io/luamqtt/)
 
+[More details](./docs_topics/README.md)
+
 # Forum
 
 See [flespi forum thread](https://forum.flespi.com/d/97-luamqtt-mqtt-client-written-in-pure-lua)

docs_topics/03-lua_versions.md

@@ -6,4 +6,6 @@ It's tested to work on Debian 9 GNU/Linux with Lua versions:
 * LuaJIT 2.0.0 ... LuaJIT 2.1.0 beta3
 * It may also work on other Lua versions without any guarantees
 
+So basically it should work on any modern Linux-based OS with Lua interpreter available.
+
 Also has run under **Windows** and it was ok, but installing luarocks-modules may be a non-trivial task on this OS.

docs_topics/README.md

@@ -0,0 +1,11 @@
+# Short documentation topics
+
+[Installation](./01-installation.md)
+
+[Dependencies](./02-dependencies.md)
+
+[Lua versions](./03-lua_versions.md)
+
+[MQTT versions](./04-mqtt_versions.md)
+
+[Connectors](./05-connectors.md)