Fixed typename of non-member function slot
more hard float fixes (use of double will crash the F4)
Merge branch 'master' into timer-channel-features
Merge branch 'fix-fnslot' of https://github.com/tokoro10g/stm32plus into tokoro10g-fix-fnslot
Merge branch 'tokoro10g-fix-fnslot'
Merge branch 'master' into timer-channel-features
this feature will bring is up to release 3.4.0