Ixmp

See the [“What's New”](https://docs.messageix.org/projects/ixmp/en/stable/whatsnew.html#v3-3-0) page in the documentation for a list of all changes.

See the [“What's New” page](https://docs.messageix.org/projects/ixmp/en/stable/whatsnew.html#v3-2-0-2021-01-24) in the ixmp documentation for a list of all changes.

See the [“What's New” page](https://docs.messageix.org/projects/ixmp/en/v3.1.0/whatsnew.html#v3-1-0-2020-08-28) in the ixmp documentation for a list of all changes.

See the new [“What's New” page](https://message.iiasa.ac.at/projects/ixmp/en/latest/whatsnew.html#v3-0-0-2020-06-05) in the ixmp documentation for a list of all changes and migration notes.

See the new [“What's New” page](https://message.iiasa.ac.at/projects/ixmp/en/latest/whatsnew.html#v2-0-0-2020-01-14) in the ixmp documentation for a list of all changes and migration notes.

Release 0.2.0 provides full support for `Scenario.clone()` across platforms (database instances), e.g. from a remote database to a local HSQL database. IAMC-style timeseries data is better supported, and can be used to store processed results, together with model variables and equations.

Other improvements include a new, dedicated `ixmp.testing` module, user-supplied callbacks in `Scenario.solve()`. The `retixmp` package using reticulate to access the ixmp API is renamed to `rixmp` and now has its own unit tests (the former `rixmp` package can be accessed as `rixmp.legacy`).

Release 0.2.0 coincides with MESSAGEix release 1.2.0.

See `RELEASE_NOTES.md` for a list of all changes.