Components scijava-ops needs to be split into:

• scijava-struct / scijava-param
• scijava-types—generic type matching utils
  • org.scijava.types.Types static utility class
  • org.scijava.types.Nil—build on Guava TypeToken
• scijava-ops (or scijava-ops-engine?)—matcher
• scijava-ops-api—lightweight, no deps, for the annotation ifaces
• SJC3 stuff:
  • scijava-context
  • scijava-plugin?
  • others
• scijava-function
  • move org.scijava.ops.function package out of "ops" umbrella