resolve plugin csv, archive crush(dependencies break)

bump to 3.7.1, update lav and mediainfo

bump to version 3.7.0

fix nuget update problem

follow updates

update to 3.6.9, fix some error and update CsvViewer plugin

Revert "Fix QL-Win#644: still use focusable window on Windows 7 and 8"

This reverts commit 452574e.

Revert "Fix QL-Win#644 step 1: correctly bring window back to top when clicked"

This reverts commit af608dc.

update to 3.6.8

Fix QL-Win#639: MathJax in Markdown viewer