v3.0.0-beta.6

Bug Fixes

• relax pages regex for workbox 4 compatiblity (04e74a7)

Features

• cleanupOutdatedCaches (9167013)
• workbox: assetsURLPattern, pagesURLPattern (5fc3d66)
• workbox: preCaching option (67f1c3d)
• workbox: upgrade workboxVersion to 4.0.0-rc.0 (b364572)