Changes / improvements

• Addition of $append and $concat functions.
• Added $$str_hash, $$str_upper, $$str_lower, $$str_find builtins.
• Improved error notes when call expressions have errors.
• Trailing body arguments may now be &ref, #hash, $const and $Type arguments.
• "panic-msg" setting to suppress panic message output.
• Require @export functions to have @export types.
• Disallow leading/trailing/duplicate '_' in module names.
• Updated mangling.
• Added $$unaligned_load and $$unaligned_store.
• --no-headers option to suppress creating headers when generating a library.
• Support c-file compilation in libraries.
• Allow using $defined(&a[1]) to check if the operation is supported.
• Max number of members in a struct is limited to 65535.
• The maximum number of parameters in a call is now 255, up from 127.
• Array comparison now uses built-in memcmp on LLVM to enable optimizations.
• Prevent implicit array casts to pointers with higher alignment #1237.
• Macro $case statements now pick the first match and does not evaluate the rest.
• manifest.json is now checked for incorrect keys.
• Added --list-manifest-properties to list the available properties in manifest.json.
• Indexing into a constant array / struct now works at compile time.
• Improved error message when trying user foreach with an untyped list.

Fixes

• Error with unsigned compare in @ensure when early returning 0 #1207.
• Prevent Mach-O from removing @init and @dynamic in a more reliable way #1200.
• Fix of missing copy of parameterized custom attributes.
• Fixed crash on certain recursive function definitions #1209.
• Return the typekind "FUNC" for a function pointer.
• No longer possible to dereference a function pointer.
• Fix bug with @jump miscompile.
• Bit negate does implicit integer promotion.
• Bitstructs, unions and flexible arrays now correctly emitted in headers.
• Fix distinct inline conversions.
• Bit negating const zero flags would give an incorrect result.
• Fix to scalar -> vector conversions.
• Bug fix for rethrow + defer catch.
• Wrong size for structs containing overaligned structs #1219
• $typeof(*x) should be valid when x is an [out] parameter #1226
• Fix ABI lowering for 128 bit vectors on Linux.
• Bad error message when using a generic method without generic parameters #1228
• Private function called from nested macro not visible to linker #1232
• Bitstructs in structs would not be correctly be handled in some cases.
• Fix problem where a $$FUNC would return "" when evaluated for a static in a function #1236.
• ordinal is no longer a valid associated value name for enums.
• Constants defined by indexing into another constant could fail codegen.
• Stdlib nolibc code bugs fixed.
• Regression: duplicate symbols with static variable declared in macro #1248.
• Unsplat with named parameters was accidentally disallowed.
• Reference parameter doesn't work with vector subscript #1250.
• The msvc_sdk script failed to work properly on windows when run in folders with spaces.

Stdlib changes

• Added remove_first_item remove_last_item and remove_item as aliases for the match functions.
• Added @str_hash, @str_upper, @str_lower, @str_find compile time macros.
• Remove "panic" text from unreachable() when safe mode is turned off.
• Added @unaligned_store and @unaligned_load.
• Null ZString, DString or pointer prints "(null)" for printf.
• Updated sorting API.
• Insertion sort and counting sort added.
• Added missing mem and mem::allocator functions for aligned allocations.
• Added new_init_with_array and temp_init_with_array for List.
• Fixed posix NativeMutex.lock_timeout.
• Fixed env::ARCH_32_BIT and env::ARCH_64_BIT.
• Added time::us.