Support writing unicode to files, thanks @jacktang
test internal log rotation when check_interval > 0
Fix typespecs for a clean dialyzer run

Fix typespec of lager_file_backend:init() and lager_msg record
Add a latin-1 test
Merge pull request #130 from gomoripeti/pgö-rotate-check-interval-test

test internal log rotation when check_interval > 0
Clarify the file backend's init() spec, correct some documentation
Merge branch 'garret-smith-gs-typespec-fixes'
Merge pull request #129 from basho/adt-unicode-fix

Support writing unicode to files, thanks @jacktang