Fixing multiple issues; adding new color commands

Fixing ISSUES #19, #18, #17, #13, #10, which include bugs, new functionality and migration to Chrome V8 runtime

Fixing bug on Adjoin, release as Apache 2.0 and added friendly error messages to avoid failing silently in some cases

v4.0

Fixing ISSUE #11 in which Adjoin operations were not working

Fixing bug on "Copy attributes > Height" command

v3.0

Fixing ISSUE #7

First release

First release on the new Chrome Web Store and G Apps Marketplace listing, which has reduced scope to avoid API authorization problems on enterprise environments.

Includes:

• Copy Attributes
• Flip
• Adjoin
• Align to Inner/Outer Edges
• Precision Snap
• Transparency
• Swap text with background
• Invert background colors
• Max text contrast