Dot not catch exceptions on Ya Metrik API calls

[DavyJohnes]

I think this is more useful to pass any error from YM API up to caller in service which uses this library. Currently, library users are not able to handle errors in YM API calls (as a result can't figure out why, for example, some goals are not tracked). I think my approach is more flexible since library users may wrap ym calls with their own wrappers which uses try { ym(...) } catch(e) {} and do something with these errors.

[hcodes]

/cc @narkq All Metrica methods are already wrapped in try catch inside tag.js. In this code, this is not necessary.

[personaljs]

a case of beer if you merge it for the day

[DavyJohnes]

@narkq ping