Version 0.8.61

Tagging release v0.8.60

v0.8.59

Changelog:
* Improved client side validation methods for database, table, column, and
  result set
* show GET response body in debug mode (enabled with TD_CLIENT_DEBUG environment
  variable)
* optimized the job model self updating methods to avoid an update if the job
  is in a 'finished' state

Version 0.8.58

Regenerate gemspec for version 0.8.56

Regenerate gemspec for version 0.8.55

Regenerate gemspec for version 0.8.54

Regenerate gemspec for version 0.8.53

Regenerate gemspec for version 0.8.52