Add a basic __new__ with some type checking to CodeBlock
Add a basic __new__ with some type checking to CodeBlock

aktech/sympy,madan96/sympy,postvakje/sympy,skidzo/sympy,aktech/sympy,drufat/sympy,sampadsaha5/sympy,souravsingh/sympy,jaimahajan1997/sympy,skidzo/sympy,drufat/sympy,yashsharan/sympy,souravsingh/sympy,skidzo/sympy,rahuldan/sympy,madan96/sympy,rahuldan/sympy,drufat/sympy,chaffra/sympy,postvakje/sympy,souravsingh/sympy,madan96/sympy,yashsharan/sympy,chaffra/sympy,yashsharan/sympy,postvakje/sympy,kaushik94/sympy,jaimahajan1997/sympy,jaimahajan1997/sympy,chaffra/sympy,rahuldan/sympy,sampadsaha5/sympy,sampadsaha5/sympy,kaushik94/sympy,aktech/sympy,kaushik94/sympy