books page updates

_books/1-programming-in-scala-4th.md

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+---
+title: "Programming in Scala, 4th ed"
+link: https://booksites.artima.com/programming_in_scala_4ed
+image: /resources/img/books/ProgrammingInScala.gif
+status: Updated for Scala 2.13
+authors: ["Martin Odersky", "Lex Spoon", "Bill Venners"]
+publisher: 
+---
+
+(First edition [available for free online reading](https://www.artima.com/pins1ed/))
+
+This book is co-authored by the language's designer, Martin Odersky. It provides depth and clarity on the diverse features of the language. The book provides both an authoritative reference for Scala and a systematic tutorial covering all the features in the language. Once you are familiar with the basics of Scala you will appreciate having this source of invaluable examples and precise explanations of Scala on hand. The book is available from [Artima](https://booksites.artima.com/programming_in_scala_4ed). Award winning book - [Jolt Productivity award](https://www.drdobbs.com/joltawards/232601431) for Technical Books.

_books/3-programming-scala.md → _books/2-programming-scala.md

@@ -2,10 +2,10 @@
 title: "Programming Scala"
 link: https://shop.oreilly.com/product/0636920033073.do
 image: /resources/img/books/ProgrammingScala-final-border.gif
-status: Updated for Scala 2.11
+status: Updated for Scala 2.12
 authors: ["Alex Payne", "Dean Wampler"]
 publisher: O’Reilly
 publisherLink: https://www.oreilly.com/
 ---
 
-Both are industry experts, Alex Payne being the lead API programmer at Twitter, a social networking service based on Scala. O’Reilly, the publisher, writes: "Learn how to be more productive with Scala, a new multi-paradigm language for the Java Virtual Machine (JVM) that integrates features of both object-oriented and functional programming. With this book, you'll discover why Scala is ideal for highly scalable, component-based applications that support concurrency and distribution. You'll also learn how to leverage the wealth of Java class libraries to meet the practical needs of enterprise and Internet projects more easily."
+Both are industry experts, Alex Payne being the lead API programmer at Twitter, a social networking service based on Scala. O’Reilly, the publisher, writes: "Learn how to be more productive with Scala, a new multi-paradigm language for the Java Virtual Machine (JVM) that integrates features of both object-oriented and functional programming. With this book, you'll discover why Scala is ideal for highly scalable, component-based applications that support concurrency and distribution. You'll also learn how to leverage the wealth of Java class libraries to meet the practical needs of enterprise and Internet projects more easily."