# Markov chain Monte Carlo sampling - ChangeLog


## Unreleased changes


## 0.3.0

-   New shorter example/test for dating trees.
-   `noData` allows running a chain without likelihood function.
-   Give proposal parameters `PName`, `PDescription`, and `PWeight` newtype
    wrappers.
-   Give `Tune` a data type.
-   Allow periodical cleansing of state (`Cleaner`).
-   Add description string to proposals, so that they can be identified in an
    easier way.
-   Add simplices and proposals on simplices.
-   `slideUniform` renamed to `slideUniformSymmetric`.
-   Merge tools into internal.
-   Do not export internal modules.


## 0.2.4

-   **Change order of arguments for proposals**.
-   'slideStem' was renamed to 'slideBranch'.
-   Change ProposalSimple from newtype to type.
-   Contravariant instances of parameter and batch monitors. Use `(>$<)` instead
    of `(@.)` and `(@#)`.
-   Add `gammaDirichlet` prior for partitioned dating analyses.


## 0.2.3

-   Contrary proposals.
-   Change how monitors are lifted (use normal function, not a lens).
-   Priors.
-   Remove concurrent monitors (was slow).
-   Improve MCMC sampler output.


## 0.2.2

-   Move away from hpack.


## 0.2.1

-   Consistently use ByteString instead of Text.
-   Verbosity levels.
-   Improved handling of proposals, moves, and monitors.
-   Bactrian moves.
-   Many small changes.


## 0.1.3

Many changes; notably it is now possible to continue a Markov chain run.