Changed:
Finalized and completed notation fixes to include covariance in uncertainty definitions section
  - Introduced q^(stat), q^(fdcf), q^(tdcf), and q^(fdcf,fit)  (BARF!)
  - Synced notation with G1601003-v7
Reorganized Sec. III to discuss systematic error and then statistical uncertainty as opposed to a mix of both
Moved discussion of Pcal systematic error identified during/post-O1 to Sec. VIII
Improved beginning of section V text and Fig 5-6 captions for consistent notation
Improved beginning of section VI text and Fig 7 caption for consistent notation
Updated time dependent parameters of Section VII, 4th paragraph to be consistent with notation
Updated Eq. 12 to be a definition that includes covariance (see G1601003-v7)
Updated Eq. 13 to be correct (the final term was inverted)
Improved some of the text in section VIII
Updated Fig 8 to include covariance
  - data comes from LHO aLOG 27774 and LLO aLOG 26571