v2.0.23

Polynomials v2.0.23

Diff since v2.0.22

Closed issues:

• Function for getting polynomial variable as symbol (#382)
• Does Polynomials use Briot Ruffini's algorithm? (#383)

Merged pull requests:

• V3 drop 1 0 (#379) (@jverzani)
• V3 docs (#380) (@jverzani)
• Qr (#384) (@jverzani)
• V3a (#385) (@jverzani)
• V3 docfix (#386) (@jverzani)
• make multiplication of polynomials type stable (#387) (@ranocha)
• version_bump [ci skip] (#388) (@jverzani)