Release 2.1.2

Full Changelog

Merged pull requests:

• Не срабатывает map.invalidateSize #264 (Trufi)
• Add tests for lazy load #263 (andymost)
• Fix promise bug in IE9 on rabota.ru site #261 (Trufi)
• Improve test connections #260 (andymost)
• Get rid of data-id="dgLoader" #255 (RLRR)
• Add traffic test, unskip and add some location tests #241 (andymost)