Richard Newman 1197764949 Implement :limit and :order-by-vars. Fixes #37. ... We'd like this to be part of the query syntax itself, but doing so requires extending DataScript's parser. Instead we generalize our `args` to `options`, and take `:limit` and `:order-by-vars`. The former must be an integer or nil, and the latter is an array of `[var direction]` pairs. This commit includes descriptive error messages and tests for success and failure.		2016-09-02 08:32:45 -07:00
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datomish	Implement :limit and :order-by-vars. Fixes #37.	2016-09-02 08:32:45 -07:00