Enhancements:
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* add run_exports and aggregated post-install metadata indexing outputs  #3060
* allow whitelisting runpath entries  #3072
* consider *_compiler_version entries when looping over variants (allow *_compiler_version to be a used variable that affects the hash)  #3084

Bug fixes:
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* fix cached git info for variants  #3082
* fix linux temporary channel not being added at test time, leaving package unresolvable  #3088

Contributors:
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* @msarahan
* @teake