Add some implemenatation to findSingleTicket
merge
merge
Almost implement findSingleTicket
merge
Merge remote-tracking branch 'origin/mechanics' into db_branch
Add max_price filter
fix
Merge remote-tracking branch 'origin/mechanics' into db_branch
Add buy function
Fix search single ticket
Merge remote-tracking branch 'origin/mechanics' into db_branch
Merge remote-tracking branch 'origin/mechanics' into db_branch
Fix buy and search
Add buy, rise, close lot
add find lot
Merge db_branch.