add failing tests
fix regular expression to extract point size from documentclass declaration
add NEWS item
Merge branch 'master' into 0.7-rc

Conflicts:
	NEWS
	NEWS.md

- Merged
Bump version to 0.6.5
Merge branch 'master' into 0.7-rc

Conflicts:
	DESCRIPTION
	R/tikzDevice-package.R
	man/tikzDevice-package.Rd

- Updated release date for 0.7.0