Merge pull request #2 from ajpaulson/master

make settings more consistent to avoid breakages
Add sessions support
Update docs
Update installation and requirements sections in the docs
Little fix in README.md
Fix typo in README.md
Remove unused "strip" function
Add "tabs" function
Fix "expand_path" function
Minor refactoring
Move the changelog in its own file.
Minor refactoring
Update README.md
Fix #5.
Update README.md
Fixing %N for noignorecase, issue #6
Merge pull request #7 from bananushka/master

Fixing %N for noignorecase, issue #6
Minor refactoring
Update docs
Add Vim 7.2 support

Added backwards-compatible replacement functions for settabvar and
gettabvar using setwinvar, settabwinvar and gettabwinvar. Each window
in a tab contains the 'tab variable', rather than the tab itself.
Requires syncing on creation of new windows.