New vendors for flex()
New package
Merge remote-tracking branch 'vonpmg/Flexbox'
Merge remote-tracking branch 'soyjavi/master'
Added support for Flexbox flex, order and lines

Two new vendors
Merge pull request #7 from vonpmg/Flexbox

Flexbox: Support for flex, order and lines
changes in modal (position fixed)
Wrapper for modal.side

Firefox supported
Wrapper for aside.absolute

Firefox flexbox supported
Changes in markup
Release 0.4.1
FIx line-height in a .tiny button
Fin line-height in headings
Enhaced .boxes
Refactor theme
Rebuild examples
.tag & :not(.icon)
Change avantar in examples
New themes
Fix margin in button.anchor