Merge pull request #4 from yjbanov/master

merge utility
Add merge_test to all_tests
Change return type of min and max to dynamic
initial commit of pattern utils
Make matchesFull use matchAsPrefix
add TODO for more Glob docs
Merge pull request #5 from google/pattern

initial commit of pattern utils
initial async utilities
Add pattern tests to all_tests
README cleanup
Clean up FutureGroup docs
Merge pull request #2 from google/async

initial async utilities
initial io utilities
Merge pull request #6 from google/io

initial io utilities
Add a version constraint for path
README fixes
Add StreamRouter
Add CountdownTimer
Test-friendy time providers and utilities