* initial commit
Merge branch 'master' into PathFlowField
* normalize
Merge branch 'master' into PathFlowField
Merge branch 'master' into PathFlowField
* fix
Merge branch 'master' into PathFlowField
* cleanup
* add decaying flow
Merge branch 'master' into PathFlowField
* fix several signed/unsigned issues
* fix decaying flow
Merge branch 'master' into PathFlowField
make PATHDIR_* consistent with PATHOPT_* again
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Merge branch 'master' into PathFlowField
Merge branch 'master' into PathFlowField
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Merge branch 'master' into PathFlowField
Merge branch 'master' into PathFlowField