Sync to 20.38.11

Corrected library name

Sync to 20.38.10

Corrected library name

Sync to 20.35.11

Added emplace by index to variant (variadic)
#660 byte_stream_reader::skip error

Sync to 20.35.6

Sync to 20.35.6

Sync to 20.35.5

Incorrect C++03 enable_if syntax for etl::array_view and etl::span

Sync to 20.32.1

20.30.0

• Fixed #560 Unable to upcast legacy variant.
• Refactored legacy variant to remove upcast functors.
• Added upcast_ptr, is_base_of & 'not a base' error exception to legacy variant.
• If ETL_USE_LEGACY_VARIANT is defined then legacy variant is in the etl namespace.
• If ETL_USE_LEGACY_VARIANT is not defined then legacy variant is in the etl::legacy namespace.
• Added non-member etl::send_message for etl::shared_message

20.30.1

• Fixed #560 Unable to upcast legacy variant Latest
• Refactored legacy variant to remove upcast functors.
• Added upcast_ptr, is_base_of & 'not a base' error exception to legacy variant.
• If ETL_USE_LEGACY_VARIANT is defined then legacy variant is in the etl namespace.
• If ETL_USE_LEGACY_VARIANT is not defined then legacy variant is in the etl::legacy namespace.
• Added non-member etl::send_message for etl::shared_message
• Green Hills compiler compatibility

20.31.0

• Added etl::poly_span
• Refacted parts of etl::span, including prevent compound statements in constexpr methods for C++11
• Added etl::is_enum

20.31.1

• Addition of extra ETL_NODISCARD and ETL_NOEXCEPT to etl::span & etl::poly_span.
• Fixed warnings for initialisation order for some etl::poly_span constructors.

20.31.2

• #567 error-handler: only return when the condition is false

20.31.3

• #569 Fixed swap function for circular_buffer_ext
• #568 Fixed circular_buffer iterator -> operators
• Optimised container move for external buffers
• Added functions and macros to etl::debug_count
• Added tests for error handler macros

20.32.0

• #571 Activate GCC and clang compiler warnings
• #575 Bip buffer improvements
• #576 Invoke function pointers with parenthesis
• #574 Allow users to remove SYSTEM keyword because it forces C linkage for some gcc versions

20.32.1

• Added size only constructor, set_buffer() and is_valid() members to circular_buffer_ext

Sync to 20.29.3

Sync to 20.29.3

20.29.3

• Updated message_packet_generator.h to match etl::message_packet changes.

20.29.2

• #557 QueuedFSM example does not compile.

20.29.1

• Added etl::byte_stream_overflow assert to byte_stream_reader 'skip'.

20.29.0

• Added etl::bit_stream_writer
• Added etl::bit_stream_reader
• Deprecated etl::bit_stream
• Added callback option to etl::byte_stream_writer
• Added error exceptions to byte_stream_writer
• Added ETL_NODISCARD to etl::delegate 'create' and 'is_valid' functions
• Added etl::visit support to etl::variant
• Refactored C++17 message_packet
• Refactored etl::atomic implementations to allow non-(integrals/pointers/bool)
• Refactors etl::vector and etl::deque resize() to take const reference parameter
• Renamed ETL_ALWAYS_ASSERT to ETL_ASSERT_FAIL
• Removed duplicate void_t definition
• Removed duplicate etl::declvar definition
• Renamed cumulative_moving_average to pseudo_windowed_moving_average to more accurately reflect its algorithm.
• Changed etl::debounce internal state names to avoid clashes with Arduino macros.

20.28.0

• Fixed issues raised by sanitizer.
• Added conditional compilation for 8 bit type in hash.h
• Fixed warnings for 64bit compilation.
• Fixed sanity check includes.
• Fixed incorrect returned span length for byte stream read.
• Updates to etl::successor and derived classes.

Sync to ETL 20.27.3

Fixed compilation error of etl::reference_counted_message_pool with ETL_LOG_ERROR enabled

Sync to ETL 20.27.2

Sync to 20.27.2

Sync to 20.24.1

20.24.1
callback and message timers now use etl::timer_semaphore_t instead of et::atomic_uint_least16_t
Fixed send_message function signatures.

20.24.0
#503 Algorithm transform uses expensive post increment operator - Fixed for all occurences of iterator increment.
#504 ETL_CONSTANT vs const in binary.h - Fixed.
Many algorithms will leverage built-ins, if available. Dependant on compiler version.
Added detection or selection of built-ins.
Much of etl::string and etl::string_view can be constexpr.
Added ETL initializer_list implementations that are compatible with major compilers.
Added etl::construct_at support.