revert default development log level to warn.
revert default development log level to warn.

mizoki/shirasagi,masakiooba/shirasagi-1,sunny4381/ss-handson,kaosf/shirasagi,sunny4381/opendata,MasakiInaya/shirasagi,sunny4381/opendata,sunny4381/shirasagi,kaosf/shirasagi,tecoda/opendata,sunny4381/shirasagi,gouf/shirasagi,shirasagi/ss-handson,kaosf/shirasagi,shirasagi/ss-handson,koba5884/shirasagi,itowtips/shirasagi,shirasagi/opendata,t-wata-cldt/shirasagi,tany/ss,kaosf/shirasagi,tany/om,ShinjiTanimoto/shirasagi,MasakiInaya/shirasagi,masakiooba/shirasagi-1,itowtips/ss-handson,tecoda/opendata,togusafish/shirasagi-_-shirasagi,mizoki/shirasagi,togusafish/shirasagi-_-shirasagi,gouf/shirasagi,hotmix/shirasagi,shirasagi/ss-handson,ShinjiTanimoto/shirasagi,itowtips/ss-handson,sert-uw/shirasagi,itowtips/shirasagi,shirasagi/opendata,shirasagi/shirasagi,togusafish/shirasagi-_-shirasagi,sert-uw/shirasagi,masakiooba/shirasagi-1,mizoki/shirasagi,tecyama/opendata,ShinjiTanimoto/shirasagi,tecoda/opendata,sunny4381/shirasagi,t-wata-cldt/shirasagi,sert-uw/shirasagi,masakiooba/shirasagi-1,sunny4381/opendata,tany/ss,shirasagi/ss-handson,toyodundy/shirasagi,sunny4381/opendata,tecyama/opendata,gouf/shirasagi,toyodundy/shirasagi,koba5884/shirasagi,koba5884/shirasagi,mizoki/shirasagi,MasakiInaya/shirasagi,toyodundy/shirasagi,gouf/shirasagi,shirasagi/shirasagi,tecyama/opendata,shirasagi/opendata,itowtips/ss-handson,sunny4381/shirasagi,t-wata-cldt/shirasagi,hotmix/shirasagi,tany/om,tecoda/opendata,sunny4381/ss-handson,tany/ss,toyodundy/shirasagi,t-wata-cldt/shirasagi,MasakiInaya/shirasagi,hotmix/shirasagi,bee01/shirasagi,tany/om,togusafish/shirasagi-_-shirasagi,shirasagi/shirasagi,sunny4381/ss-handson,hotmix/shirasagi,shirasagi/shirasagi,itowtips/shirasagi,sert-uw/shirasagi,koba5884/shirasagi,ShinjiTanimoto/shirasagi,itowtips/ss-handson,sunny4381/ss-handson,bee01/shirasagi,bee01/shirasagi,tecyama/opendata,tany/om,shirasagi/opendata,itowtips/shirasagi,bee01/shirasagi,tany/ss