Set analyzer warnings as errors in Travis CI script.
Set analyzer warnings as errors in Travis CI script.

trinarytree/quiver-dart,googlearchive/quiver_io,googlearchive/quiver_time,googlearchive/quiver_strings,googlearchive/quiver_pattern,alechenninger/quiver-dart,QuiverDart/quiver_mirrors,googlearchive/quiver_strings,QuiverDart/quiver_iterables,QuiverDart/quiver_cache,googlearchive/quiver_async,QuiverDart/quiver_pattern,googlearchive/quiver_hashcode,QuiverDart/quiver_check,kevmoo/quiver-dart,QuiverDart/quiver_collection,yjbanov/quiver_async,EmmanuelOga/quiver-dart,googlearchive/quiver_pattern,googlearchive/quiver_check,willyp564/quiver-dart,QuiverDart/quiver_pattern,kevmoo/quiver-dart,google/quiver-dart,QuiverDart/quiver_collection,googlearchive/quiver_iterables,googlearchive/quiver_iterables,googlearchive/quiver_time,QuiverDart/quiver_hashcode,matgray/quiver_iterables,QuiverDart/quiver_hashcode,QuiverDart/quiver_strings,EmmanuelOga/quiver-dart,yjbanov/quiver_hashcode,QuiverDart/quiver_mirrors,googlearchive/quiver_async,googlearchive/quiver_cache,QuiverDart/quiver_optional,QuiverDart/quiver_optional,googlearchive/quiver_collection,yjbanov/quiver_async,QuiverDart/quiver_time,QuiverDart/quiver_async,yjbanov/quiver_hashcode,cbracken/quiver-dart,googlearchive/quiver_check,googlearchive/quiver_mirrors,jtmcdole/quiver-dart,googlearchive/quiver_optional,QuiverDart/quiver_strings,willyp564/quiver-dart,QuiverDart/quiver_cache,QuiverDart/quiver_iterables,trinarytree/quiver-dart,matgray/quiver_iterables,QuiverDart/quiver_check,QuiverDart/quiver_async,googlearchive/quiver_cache,alechenninger/quiver-dart,cbracken/quiver-dart,jtmcdole/quiver-dart,googlearchive/quiver_collection,QuiverDart/quiver_io,googlearchive/quiver_optional,googlearchive/quiver_hashcode,QuiverDart/quiver_time,QuiverDart/quiver_io,googlearchive/quiver_io,googlearchive/quiver_mirrors