Remove trailing whitespace from src/ and markdown files (#1576)

CHANGELOG.md

@@ -184,22 +184,22 @@
 
 [link](https://github.com/jlongster/prettier/compare/0.19.0...0.20.0)
 
-* Fix extra parens for update expressions (#796)    
-* Fix empty options (#803)    
-* Eagerly evaluate `ifBreak` when processing template literals (fixes #795    
-* Fix function declaration params comments (#802)   
-* Update flow to 0.40 (#808)    
-* Correct link for travis   
-* Fix function call args (#809)   
-* Properly support `do` (#811)    
-* Do not put parenthesis around not named default export (#819)   
-* Adds another preset to related projects (#820)    
-* Fix trailing commas in docs (#825)    
-* Put short body of arrow functions on the same line (#829)   
-* Preserve new lines for comments after `=` (#830)    
-* Fix indentation of a merged group (#828)    
-* Migrate class comments to the beginning (#831)    
-* Update list of related projects (#833)    
+* Fix extra parens for update expressions (#796)
+* Fix empty options (#803)
+* Eagerly evaluate `ifBreak` when processing template literals (fixes #795
+* Fix function declaration params comments (#802)
+* Update flow to 0.40 (#808)
+* Correct link for travis
+* Fix function call args (#809)
+* Properly support `do` (#811)
+* Do not put parenthesis around not named default export (#819)
+* Adds another preset to related projects (#820)
+* Fix trailing commas in docs (#825)
+* Put short body of arrow functions on the same line (#829)
+* Preserve new lines for comments after `=` (#830)
+* Fix indentation of a merged group (#828)
+* Migrate class comments to the beginning (#831)
+* Update list of related projects (#833)
 * Allow breaking for logical expressions in member chains (#827)
 
 # 0.19.0