v0.3.7: Release 0.3.7
* Fix. set HTTP version uses wron opt type and leads to crash. * Fix. On Lua 5.3 returns info as integer values. * Add. Support cURL 7.54.0 * Add. `__tostring` methods to classes. * Add. `debug`, `seek`, `fnmatch`, `chunk_bgn` and `chunk_end` callbacks * Add. On Win x64 if socket value is too big it pass as lightuserdata.