Lamellar Version 0.6.0

• version 0.6
  • LamellarArrays
    • additional iterator methods
      • count
      • sum
      • reduce
    • additional element-wise operations
      • remainder
      • xor
      • shl, shr
    • Backend operation batching improvements
    • variable sized array indices
    • initial implementation of GlobalLockArray
    • 'ArrayOps' trait for enabling user defined element types
  • AM Groups - Runtime provided aggregation of AMs
    • Generic 'AmGroup'
    • 'TypedAmGroup'
      • 'static' group members
  • Miscellaneous
    • added LAMELLLAR_DEADLOCK_TIMEOUT to help with stalled applications
    • better error handling and exiting on panic and critical failure detection
    • backend threading improvements
    • LamellarEnv trait for accessing various info about the current lamellar envrionment
    • additional examples
    • updated documentation