removed timeline syntax.
This requires a lot more thought, not sure the syntax should even support it.
modified for_each syntax to prepare for updated scale/arpeggio syntax
modified arpeggio syntax to use @ instead of $ to prepare for new scale syntax
added scale syntax
added scale element syntax
added scale support to event builder
added syntax for negative (descending) intervals
Deleted Groups::Scale class. We'll use the PitchClassGroup to represent scales.
Added diatonic roman numeral chord syntax (e.g. I IV V I)
fixed namespace issues when running outside of tests