Start implementing a WEAK/STRONG modifier.
Make "ed" aware of Modifiers::strength.  Add examples to README.
Simplify the example a bit.
Move Direction to Modifiers::direction.
Swap R and r.  I guess Reverse is more common than Replace.
Fix problem setting default direction.
Move insertion modifier to Modifiers::insertion.
Move repetitions to Modifiers:: repetitions.
Simplify transformations now that repetitions is part of Modifiers.
Move structure, structure_modifier and sticky_structure to Modifiers.
Fix bug in resetting modifiers in "d".
Document current variables.