0.3.16

• Add Atomic{I,U}*::{add,sub,and,or,xor} and AtomicBool::{and,or,xor} methods. (#47)

  They are equivalent to the corresponding fetch_* methods, but do not return the previous value. They are intended for optimization on platforms that implement atomics using inline assembly, such as the MSP430.

• Various improvements to portable_atomic_unsafe_assume_single_core cfg. (#44, #40)

  • Support disabling FIQs on pre-v6 ARM under portable_atomic_disable_fiq cfg.
  • Support RISC-V supervisor mode under portable_atomic_s_mode cfg.
  • Optimize interrupt restore on AVR and MSP430. (#40)
  • Documentation improvements.

  See #44 for more.