Pghero

- Added schema to queries
- Fixed deprecation warning on Rails 5
- Fix for pg_query >= 0.9.0

- Better suggested indexes
- Removed duplicate indexes noise
- Fixed partial and expression indexes

- Better suggested indexes
- Removed unused indexes noise
- Removed autovacuum danger noise
- Removed maintenance tab
- Fixed suggested indexes for replicas
- Fixed issue w/ suggested indexes where same table name exists in multiple schemas

- Added suggested indexes
- Added duplicate indexes
- Added maintenance tab
- Added load stats for RDS
- Added `table_caching` and `index_caching` methods
- Added configurable cache hit rate threshold
- Show all connections in connections tab

- Added check for transaction ID wraparound failure
- Added check for autovacuum danger

- Fixed system stats