* Document client.escapeIdentifier and client.escapeLiteral
Per #1978 it seems that these client APIs are undocumented. Added documentation for these functions along with some examples and relevant links.
* Fix typos in new docs
* Migrate escapeIdentifier and escapeLiteral from Client to PG
These are standalone utility functions, they do not need a client instance to function.
Changes made:
- Refactored escapeIdentifer and escapeLiteral from client class to functions in utils
- Update PG to export escapeIdentifier and escapeLiteral
- Migrated tests for Client.escapeIdentifier and Client.escapeLiteral to tests for utils
- Updated documentation, added a "utilities" page where these helpers are discussed
**note** this is a breaking change. Users who used these functions (previously undocumented) on instances of Client, or via Client.prototype.
* Export escapeIdentifier and escapeLiteral from PG
These are standalone utility functions, they should not depend on a client instance.
Changes made:
- Refactored escapeIdentifer and escapeLiteral from client class to functions in utils
- Re-exported functions on client for backwards compatibility
- Update PG to export escapeIdentifier and escapeLiteral
- Updated tests to validate the newly exported functions from both entry points
- Updated documentation, added a "utilities" page where these helpers are discussed
* Ensure escape functions work via Client.prototype
Updated changes such that escapeIdentifier and escapeLiteral are usable via the client prototype
Updated tests to check for both entry points in client
`result.rowCount` is initialized to `null`, but only set to an `int`-value if the returned command tag consists of more than one word, which is not the case in general.
For example, the `LOCK` command will return a command tag of simply the form `LOCK`, and thus `result.rowCount` will stay `null`.
