Removed duplicate import of vector.
Moving libcds imports to wrapper.

Also removed duplicate imports of cstring since lib_wrapper now imports this.
Added wrapper for libcds set/get field 64 methods.

Added a class that uses the libcds get_field_64 and set_field_64 methods that
simulate a dynamically expanding integer array.
Removed call to loadText from libcds.

Instead made own read_sequence function in a utils file.
Implemented use of [] for = in CDSIntVector.

Previously you had to use the setField function to assign a value to an index
of the CDSIntVector. Now you can use the [] syntax.
Removed CDS from IntVector name.
Renamed wrapper.cpp/.h to cds_wrapper.cpp/.h.
Added back the main wrapper header file.

Removed code that belongs to main wrapper header file from cds_wrapper.* and
updated Makefile to match.