August Heegaard

Add support for SPM

3

This adds a `Package.swift` so that the library can be installed using Swift Package Manager.

Resolve build issues

5

In order to fix [#319](https://github.com/stephencelis/SQLite.swift/issues/319) in SQLite.swift submodule.

Despite the changes I've made in PR #1, Carthage builds still fail with the following type of errors: clang: error: no such file or directory: '.../Carthage/Checkouts/SQLiteCipher.swift/Vendor/sqlcipher/sqlite3.c' If I manually open...

I've made some changes, so that Freddy will build and work on Linux. Tests can be run with `swift test` in the Freddy directory. **What appears to work:** Freddy (disclaimer:...