Merge pull request #46 from NikolayS/more-reports

2 new reports: lock trees and autovacuum queue

Merge pull request #40 from NikolayS/dmius-i2-improve

Improve i1,i2,i5 and b1 reports

Merge pull request #39 from NikolayS/dmius-redundat-indexes

Redundat indexes list

Merge pull request #35 from NikolayS/i3_fix

i3: Reformat SQL and fix collision with intarray #25

Update README.md

Update README.md

WIP note for table sizes