Refactored norm ops for algebra hierarchy. Just committing to have a record, but David's refactoring will overwrite this.
merge from master
merged mutablizing adaptor
merged VectorBuilderOps
Merge branch 'feature/algebra' into devel

* feature/algebra:
  merged VectorBuilderOps
  merged mutablizing adaptor
  Refactored norm ops for algebra hierarchy. Just committing to have a record, but David's refactoring will overwrite this.