Fix: dropResult.add should not set overrides to false.
Fix: fish_success event now removes default fish rather than cancelling the event (adds compatibility with mcMMO)
Add: minor - fish_success as alias for fish_caught
Minor: don't run "set dropped velocity to player" for fish_failed.

* fish_failed trigger drops appear at players feet as we cannot locate the "hook" end of the rod
Fix: allow /odd for work properly (broken when adding /o as an alias)
Minor: add note of other fishing states
Add: support colon in target, eg: "wool:red"
Add: start of an "adjacent" condition - not yet functional
Build 2.8b.442