Merge branch 'issue/84' into 'develop'

.gitignore

package.json

src/adapter/monet.ts

src/adapter/postgres.ts

src/adapter/sql.ts

src/api/controllers/collect.ts

src/api/controllers/data.ts

src/api/controllers/engine.ts

src/api/middlewares/adapter.ts

src/api/middlewares/engine.ts

src/api/middlewares/error.ts

src/api/router-v1.ts

src/api/types.ts

src/common/expression.ts

src/common/query.ts

src/common/types.ts

src/core/adapter.ts

src/core/clause.ts

src/core/dimension.ts

src/core/engine.ts