gh-132983: Convert dict_content to take Py_buffer in ``ZstdDict()`` (GH-133924)
(cherry picked from commit f2ce4bbdfd)
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
Move from using critical sections to locks for the (de)compression methods.
Since the methods allow other threads to run, we should use a lock rather
than a critical section.
(cherry picked from commit 8dbc119719)
Co-authored-by: Emma Smith <emma@emmatyping.dev>
gh-132983: Reduce the size of ``_zstdmodule.h`` (GH-133793)
(cherry picked from commit 1a548c0a50)
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
