Monument v0.5.0

Major Changes

• (#49) Sort final composition list by absolute music score
• (#48) Allow start_indices/end_indices to be overridden for each method
• (#48) Allow negative values for start_indices/end_indices (still relative to 0 as a 'standard', i.e. lead end start)

---

Internal Improvements

Monument

• (#48) Make integration tests error on unspecified/new test cases
• (#44) Rewrite the test harness, which now doesn't depend on Python and also allows error messages
  to be tested.
• (#43) Add READMEs on Monument's pages on crates.io.

BellFrame v0.8.0

• (#47) Rename AnnotBlock to Block (removing the type-def Block = AnnotBlock<()>).
• (#47) Use u8 instead of usize as the underlying representation for Bell, Stage and places.