The template argument order for UnscentedTransform was reversed to match
all the other UKF classes. Since UnscentedTransform is intended as a
class for internal use only, this shouldn't cause much breakage.
These enable more consistent use of synchronization across the
native libraries. Users can create Event and Semaphore primitives, but
in addition, libraries can set up any handle as an Event-type signal.
Similar to the PCM, we're going to make the PH not do anything with the compressor until the PH HAL object has been initialized. The mechanism we're going to use to signal to the PH that that has happened is to begin sending the state of the solenoids (which will all be set to off at this point).
These relied on the OnStart and OnExit callbacks which were not present
in the wpiutil common CallbackManager code. Add support for these and
fix up other use cases.
Also fixes notifications to correctly filter on event kind.
This fixes a breakage caused by #3133.
This fixes the following warning.
The member function operator== only works in C++17, and the friend operator== only works in C++20.
```
/Users/runner/.gradle/caches/transforms-2/files-2.1/c671f5a5dff922b8870f4eb33f4c8e2a/wpiutil-cpp-2022.1.1-alpha-3-1-g4e3fd7d-headers/wpi/json.h:1847:46: warning: ISO C++20 considers use of overloaded operator '==' (with operand types 'const typename json::object_t::iterator' (aka 'const StringMapIterator<wpi::json>') and 'const typename json::object_t::iterator') to be ambiguous despite there being a unique best viable function [-Wambiguous-reversed-operator]
return (m_it.object_iterator == other.m_it.object_iterator);
~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/runner/.gradle/caches/transforms-2/files-2.1/c671f5a5dff922b8870f4eb33f4c8e2a/wpiutil-cpp-2022.1.1-alpha-3-1-g4e3fd7d-headers/wpi/json.h:1863:20: note: in instantiation of member function 'wpi::detail::iter_impl<const wpi::json>::operator==' requested here
return not operator==(other);
^
/Users/runner/.gradle/caches/transforms-2/files-2.1/c671f5a5dff922b8870f4eb33f4c8e2a/wpiutil-cpp-2022.1.1-alpha-3-1-g4e3fd7d-headers/wpi/json.h:5008:20: note: in instantiation of member function 'wpi::detail::iter_impl<const wpi::json>::operator!=' requested here
if (it != end())
^
/Users/runner/.gradle/caches/transforms-2/files-2.1/c671f5a5dff922b8870f4eb33f4c8e2a/wpiutil-cpp-2022.1.1-alpha-3-1-g4e3fd7d-headers/wpi/json.h:5025:16: note: in instantiation of function template specialization 'wpi::json::value<std::basic_string<char>, 0>' requested here
return value(key, std::string(default_value));
^
/Users/runner/.gradle/caches/transforms-2/files-2.1/c671f5a5dff922b8870f4eb33f4c8e2a/wpiutil-cpp-2022.1.1-alpha-3-1-g4e3fd7d-headers/wpi/StringMap.h:442:8: note: ambiguity is between a regular call to this operator and a call with the argument order reversed
bool operator==(const DerivedTy &RHS) const { return Ptr == RHS.Ptr; }
^
```
