fix: added nil check on c.CruSession to prevent crash
Merge pull request #510 from jfolkins/fix_sessregenid

fix: added nil check on c.CruSession to prevent crash
Update sess_file.go

Lock required to ensure the File sessions work correct.
Merge pull request #511 from francoishill/patch-2

Update sess_file.go
fix bug, can not remove session file
register interface to gob automatically
fix captcha urlPrefix
orm insert skip auto_now_add when user custom a value
httplib support set transport and proxy
delete MaxAge cookielifeTime replace
path default is /
httponly default true
seuce default not set
update output.Cookie
move SetSecureCookie / GetSecureCookie to *context.Context and alias in Controller
skip cookie args when value is nil
fix #505
enhance the static file path. If user foget / path.Join will auto fix it.
GetStrings action as GetString
add support for sql.Null* types

Change instructions for sqlite3 tests to use in memory db for much faster
Fix basic auth plugin example.

NewBasicAuthenticator requires passing a second argument for Realm.
fix issue#521, return error when init redis session