Typo: replace all occurence of "ordered" by "sorted" (was a translation mistake)
- sortedNext() works now on mixed sequence/tables

- use it when displaying tables
Add a special keytostring to display better table keys
Create travis file for integration with Travis-ci
String assertions:

- assertStrContains
- assertNotStrContains
- asesrtStrIContains
Reorder stuff
Rename global variable
Separate big test suites into 3 test suites
Fix actual/expected global variable, fix typo in error message
First tests for validating error messages of assertions
Add tests for error messages

Improve errror messages
Merge remote-tracking branch 'origin/master'
- add assertNotStrIContains

- improve error messages
- more tests for error messages
Improve assertIsXXX error messages

More assertIs and assertNotIs tests
Enable lua 5.2
Improve error messages for assertIs and assertNotIs (respect assertion order)
test for assertion order in assertIs
Improve assertItemsEquals tests and implementation
Verify error message of assertItemsEquals
Add support for Regexp in assertStrContains and assertNotStrContains