Batch: Meal Prep Tracker

Scanning and logging are both faster in this update. - Receipts are now read on your device. Scanning is noticeably more accurate, and the photo of your receipt never leaves your phone. - The barcode scanner now stays open as you shop, with a live running total of calories and macros on screen so you can see the basket add up. - Add extra meals on a full screen: search the food database, build a meal from individual ingredients, and watch calories and macros add up as you go. You can also type an ingredient's calories directly. - Adding items by hand and stocking your pantry now open the same full-screen, search-first flow, with results grouped into My Foods and the food database. - Enter weight in the unit that matches the pack: grams, kilograms, ounces, pounds, or by volume in ml, litres, fl oz, pints, quarts, or gallons. - When we have to guess a weight or calorie figure, that field is now highlighted so you know to check it. Editing the field clears the highlight. - Added a privacy control in Settings to opt out of anonymous usage analytics. Plus assorted fixes and polish.