Fix select with IE9
Merge branch '1.4.3-dev' of github.com:samclarke/SCEditor into 1.4.3-dev
Switch to using new base.getBody() method in rest of code.
Update chagelog to reflect #127
Update editor to store body and document in variables to improve
performance and simplify the code.
Make selectOuterText() and getOuterText() methods accessible.