Release version 0.9.6

This is a major release. After this release Fruit is in feature freeze until the release of v1.0.0, that is expected within 1-2 weeks.

Binary packages for various distributions are provided here.

Changes compared to 0.9.5

• Introduce a NormalizedComponent class to save time when creating multiple similar injectors.
• Add an unsafeGet() method to Injector.
• getMultibindings() now returns a vector instead of a set.
• Plain functions are no longer supported as providers, only lambdas are.
• Major performance improvements
• Some improvements in compile-time speed.
• Remove the dependency on the sparsehash library.
• Fix warnings/errors with the latest versions of GCC/Clang.
• Various code cleanups.