Remove old update notices from readme

Author: sheabunge

readme.txt

@@ -252,104 +252,3 @@ Snippet priorities and other small features
 
 = 2.10.0 =
 Improvements for multisite and new single-use snippet scope
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-= 2.9.5 =
-Fixed issue with saving snippets on multisite
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-= 2.8.5 =
-Prevents snippets from displaying twice in snippets table on multisite
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-= 2.8.4 =
-Fixes error with previous version on non-multisite
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-= 2.8.3 =
-Fixes potential security exploit; please update immediately
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-= 2.8.2 =
-Fixed fatal error preventing activated snippets from saving
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-= 2.8.0 =
-Interface tweaks
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-= 2.7.2 =
-Update to German translation by Mario Siegmann
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-= 2.7.0 =
-Fix translation loading and description importing
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-= 2.5.1 =
-Prevent Don't Panic message from being triggered accidentally
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-= 2.5.0 =
-Now detects errors in snippet code when saving
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-= 2.4.1 =
-Fixed CodeMirror themes not being detected on settings page
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-= 2.4.0 =
-New snippet sharing feature for multisite networks; new Snippet class
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-= 2.3.0 =
-Numerous fixes and Russian translation update. Props to @signo and @achumakov.
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-= 2.2.3 =
-Fixed error when exporting; snippet scopes can now be imported
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-= 2.2.2 =
-Fix error with PHP 5.2 added statuses for scopes to manage snippets table
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-= 2.2.1 =
-New snippet scope feature; fixed bug with translations not loading; minified all css and js
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-= 2.1.0 =
-Minor improvements to settings component; added description editor settings; minor security fixes
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-= 2.0.2 =
-Fix snippets not saving
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-= 2.0 =
-Improved import/export; new settings page; improved core code; more translations
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-= 1.9.1.1 =
-Add capability check to snippets importer
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-= 1.9.1 =
-UI improvements for WordPress 3.8
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-= 1.8.1 =
-Minimize CSS and JS; updated CodeMirror; fixed export files
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-= 1.8 =
-Setting a snippet name and code are now optional; better table creation method; changes to API; bug fixes
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-= 1.7.1.2 =
-Fixes the admin menu icon not loading
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-= 1.7.1.1 =
-Fixes a minor bug with custom capabilities and admin menus
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-= 1.7.1 =
-Added German translation thanks to David Decker; bug fixes and improvements
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-= 1.7 =
-Many improvements and optimization. Download "Code Snippets Tags" plugin to add tags to snippets
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-= 1.6 =
-Improvements and optimization with WordPress 3.5
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-= 1.5 =
-Improvements on the 'Manage Snippets' page and localization
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-= 1.4 =
-Better code highlighting and improved multisite support
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-= 1.3 =
-Added import/export feature
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-= 1.2 =
-Minor improvements |
-Added code highlighting |
-Plugin data will now be cleaned up when you delete the plugin.
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-= 1.1 =
-Minor bug fixes and improvements on the the 'Edit Snippet' page