Refactor sqlite3pp to use shared pointers for database to prevent referring to a destroyed db
Refactor sqlite3pp to use shared pointers for database to prevent referring to a destroyed db, followup with tests
Refactor followup with sqlite3pp, queries were referring to a destroyed db as a side effect of moving the Share class.
Remove Cksummer classs. Moved share seems to work now
Refactor test
Minor documentation improv.
GET, create failing unit test
File GET test passing