Chris Houser

The `:threads` option to make-reusable-conn-manager [documentation](https://github.com/dakrone/clj-http/blob/dd15359451645f677b3e294164cf70330b92241d/src/clj_http/conn_mgr.clj#L241) says "Maximum number of threads that will be used for connecting" This is used to call [`.setMaxTotal`](https://github.com/dakrone/clj-http/blob/dd15359451645f677b3e294164cf70330b92241d/src/clj_http/conn_mgr.clj#L274) on [`org.apache.http.impl.conn.PoolingHttpClientConnectionManager`](https://github.com/dakrone/clj-http/blob/dd15359451645f677b3e294164cf70330b92241d/src/clj_http/conn_mgr.clj#L213) (note the word "threads" is...