Add flags to view.find_all function call

[qtov]

Fix bug where backwards sneak would find by regex instead of literal string.
Forward sneak is working properly.

References #772

[codecov-commenter]

Codecov Report

Merging #773 (89544ac) into master (d7d4d1b) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #773   +/-   ##
=======================================
  Coverage   88.77%   88.77%           
=======================================
  Files          50       50           
  Lines       12711    12711           
  Branches     2365     2365           
=======================================
  Hits        11284    11284           
  Misses       1051     1051           
  Partials      376      376           

Impacted Files	Coverage Δ
nv/polyfill.py	78.26% <100.00%> (ø)

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[coveralls]

Coverage remained the same at 91.732% when pulling 89544ac on qtov:master into d7d4d1b on NeoVintageous:master.