Features

• VACUUM
  Use storage.vacuum() to call VACUUM query explicitly or use storage.pragma.auto_vacuum(...); to set PRAGMA auto_vacuum.
• Arithmetic operators
  +, -, *, / and % are now available for using within expressions. Example: auto doubledAge = storage.select(c(&User::age) * 2); or auto doubledAge = storage.select(mul(c(&User::age), 2));. As you can see every operator has a function in case you like functions more than operators: c(&User::age) + 5 is add(&User:age, 5). Also sub, mul, div and mod functions are now available in sqlite_orm namespace.
• Bug fixes
  Fixed compilation error in case sqlite_orm.h file is included in more than one place.
  Fixed incorrect query generation in remove call in case PRIMARY KEY is defined as a separate column.
• Warning fixes
  Fixed three Visual Studio 2017 warnings (thanks to @ntkernelcom)