Bump copyright year, add leenr as a contributor
Merge pull request #15 from vpavlenko/bump_version

Bump copyright year, add leenr as a contributor
Improve readability of lesson 1
Merge pull request #16 from vpavlenko/lesson_01

Improve readability of lesson 1
Merge pull request #17 from vpavlenko/simplify_vagrant

Clear Vagrant configuration, delete nginx setup, move towards simple man...
Added Bootstrap files, which will be needed for the changes soon
Replace jQuery corner plugin by a CSS border-radius, as this is more modern, and because jquery.corner is not working on jQuery 1.11.1
jQuery 1.11.1
Visualizer backend now has ability to execute the script without explain and instructions limit, but, if the error was occured, give an information. Almost fully rewrited frontend with this function, and more will be very soon
Fix exceptions handling in the visualizator backend
Replaced ndash character in the code in the 1st lesson
Uh... Almost entirely rewritten front-end part of the visualizator - with many new functions, new look and simple portability
New look (Bootstrap) of the some pages, switch to the new visualizer front-end
Fix examples on the visualizer page
Move editor cursor to beginning of the file when replacing code. That is nicer.
Visualizer backend: move options to it's own object
Fix syntax errors in the visualizer.js
Fixed: visualizer backend always returned unhandled_exception status
Add event callbacks support to the visualizer frontend
Backend of the problem solution tester