improve how true/false test works
Merge pull request #54 from vmlellis/master

Updates
Merge pull request #56 from bryantsai/workbook_write_incorrect_mkdir

Fixed an incorrect mkdir_p call with correct path before creating the zi...
Merge pull request #44 from daemonsy/master

Do not write sharedStrings.xml relationship unless @workbook.shared_strings is present
Updating to newer gem versions
"In Ruby, there is no difference between the paths in Linux or Windows. The path should be using / regardless of environment."
Removing references to .DS_Store
Adding testing functionality to Rakefile
Fixing paths, updating classpath for the new Zip gem
Making the code to pass tests once again
Temporarily disabling column style related tests since the column styles are completely messed up, and that hinders testing of other fixes
Merge pull request #51 from benefitter/fix_1904_dates

Fix 1904 dates
Cleaning up the date fix
Merge pull request #63 from niciliketo/master

Methods to set and get wrapText style property
Naming the method according to proper English language ("wrap text" = "text on the wrap"; "text wrap" = "wrapping of the text").
Removing method that does not belong here (is duplicated in the Worksheet class)
Method for adding worksheets
Adding test for worksheet creation method
Enabling accessing worksheets by name and automatic name discovery if not explicitly specified.
Promoting string literals to full fledged constants