chore: increment version number to 0.14.0

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: polars
 Title: Lightning-Fast 'DataFrame' Library
-Version: 0.13.1.9000
+Version: 0.14.0
 Depends: R (>= 4.2)
 Imports: utils, codetools
 Authors@R:

NEWS.md

@@ -1,6 +1,6 @@
 # NEWS
 
-## Polars R Package (development version)
+## Polars R Package 0.14.0
 
 ### Breaking changes due to Rust-polars update
 
@@ -26,7 +26,7 @@
 
 -   The `simd` feature of the Rust library is removed in favor of
     the new `nightly` feature (#800).
-    If you specified `simd` via the  `LIBR_POLARS_FEATURES` environment variable
+    If you specified `simd` via the `LIBR_POLARS_FEATURES` environment variable
     during source installations, please use `nightly` instead;
     there is no change if you specified `full_features` because
     it now contains `nightly` instead of `simd`.
@@ -56,7 +56,7 @@
 
 -   `pl$threadpool_size()` is deprecated and will be removed in 0.15.0. Use
     `pl$thread_pool_size()` instead (#784).
-    
+
 ### New features
 
 -   Implementation of the subnamespace `$arr` for expressions on `array`-type