=============
- Added `sdk_branch` config key to allow picking the branch of the
SDK that you want to base your dev SDK on.
- Added `user_installation` config key to allow operating with
`flatpak --user`.
- Added module-specific `url`, `extra_cflags`, `extra_cppflags`,
`extra_cxxflags`, and `extra_ldflags` config keys to allow a bit more
customization of a module's build.
- Switched the config file format to Python's "configparser" INI-style
format.
- Made `flapjack update` keep going when failing to fetch one repo.
- Now installs the Debug extension of your dev SDK automatically.
- Fixed using a custom location for the checkout path.
- Fixed `flapjack update` trying to fetch a git repo with no remote.
- Fixed not having a `dev_tools_manifest` key in the config file.
- Fixed `flapjack build` when some SDK extensions aren't installed.