iManaConserve

This mod will cancel a heal if the unit's health is less then the threshold healed and the spell has less then the desired casting time remaining.

NOTE: You can now simply mash your actionbar heals to check whether or not that heal spell should be cancelled!

Additional Notes:
(*) The unit does not have to be targeted, but MUST be part of the raid/party.
(*) Any heal you wish to be checked must be on one of the action bars (but can be cast by anything).
(*) Either a key must be bound in keybindings to 'Check Current Heal' or an actionbar spell must be
repeatedly pressed each time you want to check whether the spell being cast should be cancelled.

Example:
A Flash Heal (1234hp) is cast on party member Leeroy Jenkins. The threshold is set at 90% and the casttimer threshold is 0.5 seconds. The Flash Heal will be cancelled on Leeroy if he needs less than 1234 * 0.90 health (1110hp) and has less then 0.5 seconds to cast.