v0.9.0

KrylovKit v0.9.0

Diff since v0.8.3

• New function lssolve for least squares problems (using LSMR algorithm)
• New functions reallinsolve and realeigsolve for solving linear problems and eigenvalue problems with linear maps which are formulated in complex arithmetic, but are only linear with respect to real linear combinations (i.e. assume to be working in a real vector space irrespective of the scalar type)

Breaking changes

• The verbosity system and the output formatting has been redesigned (both in the primal methods and the rrules). The default verbosity level is now 1, which means that warnings will be printed by default, but all other output (info messages) are suppressed. Before, the default verbosity was such that all output (including warnings) were suppressed.

Merged pull requests:

• Implement support for real linear maps (#105) (@Jutho)
• Change rrule verbosity behaviour (#106) (@Jutho)
• LSMR further updates (#111) (@Jutho)
• simplify and improve lsmr implementation (#112) (@Jutho)
• add LSMR reorthogonalisation functionality (#113) (@Jutho)

Closed issues:

• stackoverflow (#102)