Allow lifetime annotations in `database_storage!` and `query_group!`#104

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fabianschuiki wants to merge 5 commits intosalsa-rs:masterfrom fabianschuiki:database-lifetimes

+321-48

Commits on Jan 3, 2019

impl lifetime annotations in database_storage
fabianschuiki
committed

Commits on Jan 4, 2019

Commits on Jan 8, 2019

remove phantom data from query debug output
fabianschuiki
committed