WIP: Hyteg

integrate changes made to enable code generation for hyteg

added 628 commits

• da54b3ec...b2b2e912 - 626 commits from branch master
• f8ea9fc4 - Merge branch 'master' into hyteg
• 98f072ff - some fixes for hyteg

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added 2 commits

• 26fce4ff - use int64_t for loops to prevent warnings when comparing to arguments
• f76edf72 - add single argument integer functions

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can this be closed? :)

closed