Add option to only open quickfix window on error (#189)
add sumatra pdf viewer -> editor search
fix if-logic for g:LatexBox_quickfix < 3
redraw after quickfix-window has displayed

Before, the quickfix-window wasn't displayed until the next redraw
occured (usually after some keystroke).
Fix folding preamble area.

If there are \documentclass and \begin{document} in comments then there
are multiple folded preamble.

The fix correct the match pattern by prefix with s:noncomment and
s:bslash.
Merge pull request #191 from EPNGH/patch-2

Add FAQ entry to docs: sumatra pdf viewer -> editor search
Merge pull request #193 from stev47/quickfix-window

Fix two issues with quickfix window
Merge pull request #194 from cwahbong/fold_preamble_fix

Fix folding preamble area.
Redraw before echo (fix #193)
Allow for passing arguments to LatexView

I would like to enable Forward Searching for SumatraPDF by supplying the parameters

'-forward-search '.expand('%:p').' '.line(".").' '
Added optional Viewer Arguments
minor corrections
fixed type
Merge pull request #195 from EPNGH/patch-3

Allow for passing arguments to LatexView
properly parse arguments for LaTeX Viewer
Fixed setup of SyncTeX feature
Merge pull request #197 from EPNGH/patch4

Fix LatexViewer argument parser and accompanying documentation
Minor clean up
Not necessary fnameescape (fix #196)