0.3.19

Upgrading. After this upgrade, a line is refused where 0.3.18 saved it and never posted it: a table whose rule hands its lines to an add-on through a column that was made a plain number (an app built by Adminium Designer on 0.3.18, with the rule added after the table). Apply the app again (adminium apply, or the update in Apps) so the column gets its link, or link the column in Studio; where rows already point at a row that is gone, the check names them (LINK_ORPHANS) and they are cleared first.

What's Changed

• feat: four things an app on an add-on needed by @MoSofi in #83
• feat: plan 63, lane O — the price question, Offers' core by @MoSofi in #81
• fix(apps): a link's check reads the live key; MySQL types match; undo passes by @MoSofi in #85
• fix(schema): a SQLite rebuild refuses only the orphans it would add by @MoSofi in #86

Full Changelog: v0.3.18-rc.0...v0.3.19