Update version to 0.12.6

[eeeebbbbrrrr]

Welcome to pgrx v0.12.6. This releases fixes a number of bugs, cleans up various parts of the code, adds more Postgres #include headers, and other little things.

To upgrade, first install cargo-pgrx with cargo install cargo-pgrx --version 0.12.6 --locked. Then you can run cargo pgrx upgrade in your extension's crate to update its dependencies.

What's Changed

• Removed extra allocation from IntoDatum for char by @YohDeadfall in Removed extra allocation from IntoDatum for char #1887
• Fixed IntoDatum impl for char introduced by Removed extra allocation from IntoDatum for char #1887 by @YohDeadfall in Fixed IntoDatum impl for char introduced by #1887 #1889
• Support refs to unsized SqlTranslatable types by @workingjubilee in Support refs to unsized SqlTranslatable types #1890
• Nullable is Copy when T is Copy by @workingjubilee in Nullable is Copy when T is Copy #1884
• Macro based IntoDatum for string types by @YohDeadfall in Macro based IntoDatum for string types #1886
• impl FromDatum for CString by @workingjubilee in impl FromDatum for CString #1896
• Add BorrowDatum for unsizing borrows of datums by @workingjubilee in Add BorrowDatum for unsizing borrows of datums #1891
• Always panic if len of varlena exceeds the maximum by @YohDeadfall in Always panic if len of varlena exceeds the maximum #1894
• Use cstr literal syntax to avoid unsafe and ??? by @workingjubilee in Use cstr literal syntax to avoid unsafe and ??? #1898
• Implement UnboxDatum for ItemPointerData by @syvb in Implement UnboxDatum for ItemPointerData #1900
• fix compilation on some CPUs and Windows by @usamoi in fix compilation on some CPUs and Windows #1901
• docs: update generic type name of TableIterator by @SteveLauC in docs: update generic type name of TableIterator #1905
• Remove Python workaround for Homebrew by @workingjubilee in Remove Python workaround for Homebrew #1908
• Improved messages for json errors by @YohDeadfall in Improved messages for json errors #1893
• Adds more headers by @aykut-bozkurt in Adds more headers #1910
• docs: align description of GucContext::SuBackend and GucContext::Backend with original PostgreSQL description by @mrl5 in docs: align description of GucContext::SuBackend and GucContext::Backend with original PostgreSQL description #1909
• docs: update outdated README by @SteveLauC in docs: update outdated README #1914
• fix compilation on emscripten by @usamoi in fix compilation on emscripten #1917
• feat: include 'storage/indexfsm.h' by @SteveLauC in feat: include 'storage/indexfsm.h' #1912
• refactor: more CStr literals by @SteveLauC in refactor: more CStr literals #1911
• fix segfault with empty numrange during from_datum() by @eeeebbbbrrrr in fix segfault with empty numrange during from_datum() #1918

New Contributors

• @mrl5 made their first contribution in docs: align description of GucContext::SuBackend and GucContext::Backend with original PostgreSQL description #1909

Full Changelog: v0.12.5...v0.12.6