Update NEWS

NEWS.md

@@ -1,6 +1,40 @@
 # gestalt
 
-## 0.1.2.9000
+## 0.1.4
+
+### New features
+
+  * `posure()` is a means of creating _efficient_ variable (i.e., parameterized)
+    composite functions.
+
+    In particular, this addresses a shortcoming of the use of the magrittr `%>%`
+    in functions. For instead of writing
+    ```
+    function(..., b = 2, n) {
+      sample(...) %>% log(base = b) %>% rep(n)
+    }
+    ```
+    which is inefficient because the function chain is created anew with each
+    call, you can more directly write
+    ```
+    posure(b = 2, n ~ {
+      sample %>>>% log(base = b) %>>>% rep(n)
+    })
+    ```
+    Not only is the `posure()` version more succinct (you don’t need to specify
+    a placeholder ‘`...`’), it is also robuster, and faster than the version
+    with `%>%`, thanks to a non-standard scoping mechanism under the hood.
+    
+  * `let()` enables you to create **contexts**: local environments in which
+    named expressions are _lazily_ resolved in a given order. Tidyverse
+    quasiquotation of expressions is supported, allowing you to exercise
+    fine-grained control over the evaluation of subexpressions.
+    
+  * As a companion to `let()`, `run()` evaluates an expression relative to a
+    context. Unlike `base::with()`, `run()` supports quasiquotation and provides
+    a means of overriding bindings in the given context.
+  
+### Minor improvements
 
   * When calling a composite function, the point (`.`) in an implicitly curried
     function may now assume any name (#10). This is useful when you want to call