Updated local dart lib references to >= 0.3.5+1
breaking out example dir into libraries
bot_io learned enableScriptLogListener();
hop_tasks: unit_test: fix bad override of logTestCaseMessage

send log to task context.fine

marking overrides with @override attribute to get help with these kinds of misses
in the future
hop: RootTaskContext: logging messages at level @ INFO as GRAY
test: hop: integration tests: TODO to generalize some logic into bot_test
bin/hop: tighten up args passed to `dart`
BREAKING: hop: description arg on Task is now named (not positional)
hop_tasks: process: writing out stdOut at info (not fine)
test -> hop; log messages in the test context at info
hop: RunResult: include descriptive name
NEW! bot_io added completion
hop: moving hop to use bot_io completion