Switching db with `use` does not update db name in prompt

I experience similar issue to #408
1. Connect to host
```
$ mssql-cli -U -P -S
master >
```
2. Switching to different DB
```
master> use test_db;
Time: 0.252s
Commands completed successfully.
master>
```
3. Promp indicates "previous" db but context uses "new" db (`\lt` for instance returns tables from `test_db`);

If I start mssql-cli with `-d` flag it seems fine:
```
$ mssql-cli -U -P -S -d test_db
test_db>
```
However `use` command still does not change prompt name

Version 1.0.0