Modified tests for allowing stepping read mode
Made PerformPuts and PerformGets optional

To do: understand blocks per step at write for string

Resolving long ambiguity
Correcting APPLE MACROS

Need to add examples and tests
Fixed some bugs in Attribute Read

Working on Fortran examples
Testing Row Major Reader
Debugging parallel read
Changed file open function
Added initial tests 1D and 2D

Remove cdash warnings for unused variables, type cast (including HDF5
char vs. int8) and virtual functions overloads.

Debug hello_bpWriter

Changed m_Transports from vector to map, needed by subfile manager

BP3 Deserialization:
Getting subfile seeks and intersection info
Set host language in bindings for row-major and zero-index info

Passed ctest (MPI and nonMPI) excluding ADIOS1 engine, and Python bindings
HDF5, C bindings and C++ tests working
Introduced BeginStep EndStep functions
Renamed IO GetVariable/Attribute to InquireVariable/Attribute

Getting and defining available Variables at Open
Storing Variable position in Metadata, added to VariableBase
mpidummy: Added support for MPI_Reduce, MPI_Gatherv
Added utils and BPLS

Implemented basic buffer reading functionality
Added threading for bp serialization/deserialization
Refactored MPI functionality
Engine is now a reference
Initial Read API