Bug fix release
Inlining push() functions that must be in IRAM for calling from ISRs, due to gcc issue https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70435
Inlining push() functions that must be in IRAM for calling from ISRs, due to gcc issue https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70435