Fix minor bugs and deploy wheels for linux x86

• Fix decode error which occurs when higher order terms are wrapped by SubH expression.
• Fix error which occurs when you compile the expression with higher order terms in windows.
• Deploy Python wheels to PyPI server for Linux x86 architecture.

C++ implementation

• Optimized the compile speed by implementing the core logic in C++ language
• Introduced DecodedSample object which allows you to access the energy of the Sub-Hamiltonian, Constraint, Array.
• Deprecated utility solver methods, such as solve_qubo and solve_ising. Instead, PyQUBO became more friendly with Ocean SDK Sampler.

Optimize Compilation

Compilation is optimized and it has become about 10x faster.

Add Binary Encoded Integer

Added the following binary encoded Integers.

• UnaryEncInteger
• LogEncInteger
• OneHotEncInteger
• OrderEncInteger

Change Qbit to Binary

Changed the class name Qbit to Binary

0.1.0

Release 0.1.0 includes

• Use dimod.Vartype as an argument to specify 'SPIN' or 'BINARY'.
• Create Array in place of Vector and Matrix.
• Create Xor logical gate.
• Use optimized SA in pyqubo.utils