postgresql commit 13d00729d422c84b1764c24251abcc785ea4adb1 renamed blk_read_time/blk_write_time columns. That's why the symlink didn't work with the new version.
While here, slightly change IO timing calculations: now it includes in addition to shared_blk_read_time also local_blk_read_time and temp_blk_read_time. These are also IO timings, so it will be more correct this way. Similarly with write timings.
1) display warnings when DB is close to xidWrapLimit by 200M transactions
2) remove '\r' symbol from queries for better display at email clients
fix incorrect numbering of queries when there is no 'other' query, fix IO percentage at total time when there is very little / no activity on database since last pg_stat_statements reset.
1) display track utilities information
2) display most returning rows queries with % of total rows
3) speed up execution in case of very long queries
4) truncate query to 8kb size in report
fix possible incorrect filtration of top I/O queries.