Merge branch 'release_v1.8.0'

CHANGELOG.md

src/libs/convert/integralTime.js

src/libs/convert/period.js

src/libs/middlewares/id2str.js

src/libs/routes/api.js

src/libs/routes/classroomCount.js

src/libs/routes/employees.js

src/libs/routes/financial.js

src/libs/routes/school.js

src/libs/routes/transport.js