Changelog for GoogleSiteMap.

GoogleSiteMap 1.2.1
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- [#1] Add ability to make sitemap from a specific Resource via startId property
- [#4] Fix issue where children of non-published resources were not showing
- [#5] Fix issue where children of non-searchable resources were not showing

GoogleSiteMap 1.2
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- Fix reference URL for schema
- Fix reference to 0.9
- Update schema to 0.90

GoogleSiteMap 1.1
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- Added maxDepth, excludeResources properties
- Refactored to work with overridable chunks for templates
- Fixed URL generation bug where home URL was incorrectly generating
- Updated copyright information
- i18n of properties

GoogleSiteMap 1.0
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- Updated package build for Revo RC1
- Added fix for when editedon is empty (thanks Andrey Federov!) 
- Added changelog