dclient insert command (#13)

* Move making queries to own page, refs #7
* Documentation for the dclient insert feature, refs #8
* Implemented progress bar for insert, refs #8
* --pk option
* --ignore and --replace for insert, refs #8
* --batch-size option, refs #8
* First insert test, using a mock - refs #8
* insert test that exercises against an in-memory Datasette instance, refs #8
* Insert tests now cover an error case, refs #8
* Tests for --ignore and --replace, refs #8
* Tests for different formats, refs #8
* Test for --no-detect-types
* Support for --encoding, refs #8

docs/authentication.md

@@ -1,3 +1,5 @@
+(authentication)=
+
 # Authentication
 
 `dclient` can handle API tokens for Datasette instances that require authentication.