changelog update/fixes

CHANGELOG.md

@@ -4,11 +4,12 @@ OhMyThreads.jl Changelog
 Version 0.5.0
 -------------
 
-- ![feature][badge-feature] Added a `SerialScheduler` that can be used to turn off any multithreading.
-- ![feature][badge-feature] Added `OhMyThreads.WithTaskLocals` that represents a closure over `TaskLocalValues`, but can have those values materialized as an optimization (using `OhMyThreads.promise_task_local`)
+- ![Breaking][badge-breaking] `DynamicScheduler` and `StaticScheduler` don't support `nchunks=0` or `chunksize=0` any longer. Instead, chunking can now be turned off via an explicit new keyword argument `chunking=false`.
+- ![Feature][badge-feature] Added a `SerialScheduler` that can be used to turn off any multithreading.
+- ![Feature][badge-feature] Added `OhMyThreads.WithTaskLocals` that represents a closure over `TaskLocalValues`, but can have those values materialized as an optimization (using `OhMyThreads.promise_task_local`)
 - ![Enhancement][badge-enhancement] Made `@tasks` use `OhMyThreads.WithTaskLocals` automatically as an optimization.
 - ![Feature][badge-feature] In the case `nchunks > nthreads()`, the `StaticScheduler` now distributes chunks in a round-robin fashion (instead of either implicitly decreasing `nchunks` to `nthreads()` or throwing an error).
-- ![Feature][badge-feature] The `DynamicScheduler` (default) and the `StaticScheduler` now support a `chunksize` argument to specify the desired size of chunks instead of the number of chunks (`nchunks`). Note that `chunksize` and `nchunks` are mutually exclusive.
+- ![BREAKING][badge-breaking] The `DynamicScheduler` (default) and the `StaticScheduler` now support a `chunksize` argument to specify the desired size of chunks instead of the number of chunks (`nchunks`). Note that `chunksize` and `nchunks` are mutually exclusive. (This is unlikely to break existing code but technically could because the type parameter has changed from `Bool` to `ChunkingMode`.)
 - ![Feature][badge-feature] `@set init = ...` may now be used to specify an initial value for a reduction (only has an effect in conjuction with `@set reducer=...` and triggers a warning otherwise).
 - ![BREAKING][badge-breaking] Within a `@tasks` block, task-local values must from now on be defined via `@local` instead of `@init` (renamed).
 - ![BREAKING][badge-breaking] The (already deprecated) `SpawnAllScheduler` has been dropped.