mercury 0.9.0

• Unified client/server code
• Separation of layers: mercury core (low level interface using buffers) mercury (higher level providing encoding/decoding methods) mercury macros (higher level providing code generation and wrappers)
• Add support for HG callback interface
• Add first support for cancellation of HG and HG bulk operations
• Add NA SM (shared-memory) plugin
• Add NA CCI plugin
• Modify internal progress to use/expose file descriptors from NA plugins and allow switch between polling / busy waiting
• Update mchecksum library dependency to 0.3.0
• Various memory optimization and performance improvements
• Documentation available on the mercury website for more details regarding current API changes and usage.