Fix ids starting with reserved word tokenizing #82
Fix ids starting with reserved word tokenizing #82

Revise the lexer to prevent that the identifiers that start with a
reserved word are interpreted as other types of token instead of
identifiers, following the guideline on the Ply documentation [1] (4.3).

[1] http://www.dabeaz.com/ply/ply.html

atilag/qiskit-sdk-py,QISKit/qiskit-sdk-py,ChristopheVuillot/qiskit-sdk-py,ChristopheVuillot/qiskit-sdk-py,QISKit/qiskit-sdk-py,atilag/qiskit-sdk-py,atilag/qiskit-sdk-py,ChristopheVuillot/qiskit-sdk-py,QISKit/qiskit-sdk-py