- Properly setup build matrix
- Clean up .travis.yml
- Try building with Boost 1.57 and Boost 1.58
- Install dependencies to the deps/ subdirectory
- Reduce memory usage of test/type.cpp
- Re-enable some Fusion tests
This is because using variable templates limits the objects to being
constexpr, or to not being constexpr (but then initializing the object
becomes an issue).
This is also a step towards being compilable by GCC 4.9, but that only
would not justify the change.