v0.5.8

Manopt v0.5.8

Diff since v0.5.7

Fixed

• fixed a small bug in the NonmonotoneLinesearchStepsize hwn the injectivity radius is an irrational number.
• fixed a small bug in check_gradient where eps might have been called on complex types.
• fixed a bug in several gradient based solvers like quasi_newton, such that they properly work with the combined cost grad objective.
• fixes a few typos in the docs.

Merged pull requests:

• Fix two small bugs. (#440) (@kellertuer)
• Fix a bug where QN did not accept CombinedCostGrad objectives. (#441) (@kellertuer)