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Prototype 1.7
31 comments | Posted by AndrewLast week, we tagged the first stable release of 1.7, marking the end of a far-too-long release cycle. We've made more than 50 improvements since the last stable version and are already working on 1.7.0.1.
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Prototype 1.7 RC3: Support for IE9
14 comments | Posted by AndrewRelease Candidate 3 of Prototype 1.7 is now out. This long-delayed version includes full support for Internet Explorer 9.
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Prototype 1.7 RC2
12 comments | Posted by AndrewWe’ve just tagged Release Candidate 2 of Prototype 1.7, with the intent of putting out a final 1.7 release very soon.
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Prototype 1.7 RC1: Sizzle, layout/dimensions API, event delegation, and more
34 comments | Posted by AndrewWe've just tagged the first release candidate of Prototype 1.7: a major new version with some major new features.
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Prototype 1.6.1 released
52 comments | Posted by samWe’re pleased to announce the release of Prototype 1.6.1 today. This version features improved performance, an element metadata storage system, new mouse events, and compatibility with the latest browsers. It’s also the first release of Prototype built with Sprockets, our JavaScript packaging tool, and PDoc, our inline documentation tool.
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Prototype 1.6.1 RC3: Chrome support and PDoc
26 comments | Posted by AndrewToday we’re announcing Release Candidate 3 of Prototype 1.6.1. Among the highlights of this release are official Chrome support, improved IE8 compatibility, faster generation of API documentation with PDoc, and lots of bug fixes.
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Prototype 1.6.1 RC2: IE8 compatibility, Element storage, and bug fixes
29 comments | Posted by AndrewToday we tagged the first public release candidate of Prototype 1.6.1. (What happened to RC1? Long story.) While there are more minor fixes we’d like to get into this release, we decided an interim release was necessary because of the final release of Internet Explorer 8 last week.
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Prototype 1.6.0.3: A long-awaited bugfix release
30 comments | Posted by AndrewYesterday we released Prototype 1.6.0.3, the result of some much-needed bug fixes, and a stopgap release on the road to 1.6.1.
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Prototype 1.6.0, script.aculo.us 1.8.0, and the Bungee book now available
60 comments | Posted by samThe final versions of Prototype 1.6.0, script.aculo.us 1.8.0, and the Prototype & script.aculo.us book are now available. Prototype 1.6.0 is the most significant update to the framework since its inception over two years ago. We’re very excited about the changes in this release, and what better way to celebrate than with an update to script.aculo.us and a book covering all the new goodness?
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Prototype 1.6.0 RC1: Changes to the Class and Event APIs, Hash rewrite, and bug fixes
64 comments | Posted by samTwo months after putting 1.6.0 RC0 out in the wild, we’ve fixed a handful of bugs and made some changes to the Class and Event APIs in response to your feedback. We’ve also addressed a long-standing issue with the Hash class. These changes are now available for download in our second release candidate, Prototype 1.6.0 RC1. Keep reading for a detailed description of the changes, some of which are incompatible with previous versions of Prototype.
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Prototype 1.6.0 release candidate
90 comments | Posted by samThe first release candidate of Prototype 1.6.0 has arrived! The core team is continuing its tradition of bringing thoughtful incremental upgrades to the core APIs in addition to performance improvements and bug fixes. Keep reading for some of the highlights of this major release, or download it now for instant gratification.
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"Prototype and script.aculo.us:" 2nd beta is out!
21 comments | Posted by ChristopheThe 2nd beta (B1…) of Christophe’s upcoming book, “Prototype and script.aculo.us,” was released yesterday by the Pragmatic Programmers. It now features the whole contents about script.aculo.us, and is 95% content-complete.
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Prototype 1.5.1.1 bug fix release
27 comments | Posted by MislavPrototype 1.5.1.1 is now available for download. This is a bug fix release that prevents crashes with versions 1.3 and 2.0.x of the Safari browser. We urge everyone using Prototype 1.5.1 to upgrade to this latest release.
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Prototype 1.5.1 released
41 comments | Posted by MislavAfter almost two months of testing through four release candidates, the final version of 1.5.1 is here. The core team and dozens of contributors have fixed 30 bugs and introduced a slew of features and performance optimizations since 1.5.0. Here’s a look at the highlights of our best release yet.
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Release candidate 4
7 comments | Posted by TobieWe’ve squeezed a couple more bugs and decided to play safe by releasing yet another release candidate: Prototype 1.5.1_rc4.

