Changes (as compared to 5.55) include:
* Fixed a memory leak when reading MySQL server logs through SFTP.
* Fixed a multi-threading issue that in rare cases could crash MONyog running on Linux while reading the MySQL error log.
* “Apply settings to all the servers with same tags” was not working when data collection was disabled globally.
* The fix in 5.55 for indented display of a slave compared to its master was not complete. Proper indentation could still fail.