Revert "Revert "removes accidental changes""

This reverts commit ba4d080bc17658d61561b01dd906dd047bbc5f53.
Revert "reverts"

This reverts commit b9a1e8b0d2fc414c8c310f0cb865e5fa60db88e0.
Revert "removes accidental changes"

This reverts commit 009d8273bd88d96210f28c5125f02e0b2089b8ca.
Revert "Adds xfail test command to added unit test"

This reverts commit c1e29e9e979a97f07e7fc2d56a6e1eb59a3a426e.
Revert "Bug fix to linear_extrapolator method and adds unit test"

This reverts commit 6e7cd4c096b83abdcb7083d1dac663d29d80af12.
Revert "Adds linear extrapolator method"

This reverts commit 3f5b2f22ee1756e995c613468f5cb2666f21335a.
Revert "Refactor flux point computation methods."

This reverts commit e9a8d96ad70b3a3bae3309cbd89a6cf1f27762a5.