Add declarations of exceptions. Rename sqlite3 to _sqlite3, because object files names clash.
Add project with unit tests.\nAdd error definitions.
Add gtest to test project.\nAdd first implementation of exec function. Add test for exec function.
Add sketch of tuple version of exec.
Remove notes.
Add column family of functions.\nAdd exec and vexec.
Merge branch 'master' of github.com:ciechowoj/sqlite3cpp11