v1.0

• add check in / check out history

v0.0.8

• fix multiple back cameras problem
• show usage time

v0.0.7

• add camera lib chooser
• optimize open camera speed

v0.0.6

• optimize camera in scan qr-code screen
• show timestamp

v0.0.5

• change qr-scanner from JsQRScanner to html5-qrcode
• reduce number of tabs in Safari

v0.0.4

1. sort shop by checked-out, checked-in and timestamp (desc)
2. restore rename feature
3. apply compact style to place list

v0.0.3

• update app logo
• fixed iOS issues