Add {Match,Motion}Result and exception classes to "stbt run" public API
Add {Match,Motion}Result and exception classes to "stbt run" public API

These names are now exposed directly in the script's namespace, so the
script can say "except MatchTimeout" instead of "import stbt; except
stbt.MatchTimeout".

You could argue that "stbt run" shouldn't expose *any* names to the test
script, and you should always have to write "import stbt" in the script.
But at least now there is consistency between MatchResult, MatchTimeout,
etc., and wait_for_match etc.

LewisHaley/stb-tester,martynjarvis/stb-tester,martynjarvis/stb-tester,stb-tester/stb-tester,stb-tester/stb-tester,wmanley/stb-tester,martynjarvis/stb-tester,wmanley/stb-tester,LewisHaley/stb-tester,wmanley/stb-tester,stb-tester/stb-tester,LewisHaley/stb-tester,martynjarvis/stb-tester,martynjarvis/stb-tester,wmanley/stb-tester,LewisHaley/stb-tester,LewisHaley/stb-tester,stb-tester/stb-tester,martynjarvis/stb-tester,wmanley/stb-tester,LewisHaley/stb-tester,martynjarvis/stb-tester,LewisHaley/stb-tester