LightweightServo support for ATmega2560, renamings and bug fix

• LightweightServo support for ATmega2560.
• Renamed mCurrentMicrosecondsOrUnits to mLastTargetMicrosecondsOrUnits to make clear, that trim and reverse is NOT applied to this value.
• Changed DISABLE_MIN_AND_MAX_CONSTRAINTS to ENABLE_MIN_AND_MAX_CONSTRAINTS. Constraint checking is now disabled by default.
• candorgander fixed a bug in printEasingType() for non AVR platforms.

Functions added

• Added functions setEaseTo(), setEaseToD(), startEaseTo() and startEaseToD() with first parameter as unsigned int to avoid compiler errors call of overloaded 'startEaseTo(unsigned int....
• Added functions read() and readMicroseconds() to be compatible to Servo library.
• Added function reattach() without parameters to be used after detach().
• Added USE_USER_PROVIDED_SERVO_LIB macro.

Added function setFloatDegreeForAllServos()

• Renamed function setDegreeForAllServos() to setIntegerDegreeForAllServos() and added function setFloatDegreeForAllServos().

ATmega4808 support added

• ATmega4808 support added.
• Added function getCurrentMicroseconds().
• Improved many and added workaround for ESP32 bug in while loops in examples.
• Added PCA9685_ACTUAL_CLOCK_FREQUENCY macro.
• Renamed function synchronizeAndEaseToArrayPositions() to setEaseToForAllServosSynchronizeAndWaitForAllServosToStop().

Added support to pause and resume

• SAMD51 support by Lutz Aumüller.
• Added support to pause and resume and DISABLE_PAUSE_RESUME.
• Fixed some bugs for PCA9685 expander introduced in 3.0.0.
• Feather Huzzah support with the help of Danner Claflin.
• Added ENABLE_EXTERNAL_SERVO_TIMER_HANDLER macro.

New easing type PRECISION. Added min and max constraints for servo write().

• Added target reached callback functionality, to enable multiple movements without loop control.
• Changed ENABLE_MICROS_AS_DEGREE_PARAMETER to DISABLE_MICROS_AS_DEGREE_PARAMETER thus enabling micros as parameter by default.
• Fixed some bugs for micros as parameter.
• Changed constants for easing types.
• Additional parameter aUserDataPointer for user easing function.
• New easing type PRECISION.
• New function printEasingType().
• Easing functions are converted to static member functions now.
• Easing types can be disabled individually.
• Improved PCA9685 handling / support for SoftI2CMaster.
• Changed default for parameter doWrite for setTrim() from false to true.
• Added min and max constraints for servo write() and DISABLE_MIN_AND_MAX_CONSTRAINTS.

RP2040 support

• Fix for Nano Ever interrupts #43
• Documentation

Renamed ServoEasing.cpp to ServoEasing.hpp

• New attach() functions with initial degree parameter to be written immediately. This replaces the attach() and write() combination at setup.
• Renamed ServoEasing.cpp to ServoEasing.hpp and LightweightServo.cpp to LightweightServo.hpp.

ENABLE_MICROS_AS_DEGREE_PARAMETER also available for PCA9685 expander

• ENABLE_MICROS_AS_DEGREE_PARAMETER also available for PCA9685 expander.
• Moved sServoArrayMaxIndex, sServoNextPositionArray and sServoArray to ServoEasing::sServoArrayMaxIndex, ServoEasing::ServoEasingNextPositionArray and ServoEasing::ServoEasingArray.
• Support for Apollo3 2.x core.
• Fixed ESP8266 pin definitions.

Improved LightweightServo API, new compile option ENABLE_MICROS_AS_DEGREE_PARAMETER.

• Added compile option ENABLE_MICROS_AS_DEGREE_PARAMETER to allow usage of microseconds instead of degree as function arguments for all functions using degrees as argument.
• Improved LightweightServo API.