v0.10.0

QUBOTools v0.10.0

Diff since v0.9.3

Merged pull requests:

• Write models using indices rather than variables (#51) (@pedromxavier)
• Consolidate Updates & Bump Version (#53) (@pedromxavier)

Closed issues:

• Incorrect assumption about idempotence of quadratic terms (#49)
• Use internal indices when writing files (#50)