v0.8.5

IterativeSolvers v0.8.5

Diff since v0.8.4

Closed issues:

• add abs_tol as termination criterion (#207)
• stopping with preconditioners (#249)

Merged pull requests:

• Absolute and relative tolerance for linear solvers (#280) (@ranocha)
• update TagBot (#281) (@ranocha)
• add GitHub actions CI (#282) (@ranocha)
• fix Coveralls (#283) (@ranocha)
• remove Travis CI (since we have GitHub actions) (#284) (@ranocha)
• Improve testing infrastructure (#285) (@ranocha)