Add class ref to time activity model
Update estimate.rb

Fixed txn_tax_detail, added :as => TransactionTaxDetail so that it is parsed correctly.
Merge pull request #156 from walter4dev/patch-1

Update estimate.rb
Merge pull request #153 from jabr/add-class-to-time-activity

Add class ref to time activity model
Add Payment entity to batch request and response.
Basic spec to investigate error on Intuit forums https://intuitpartnerplatform.lc.intuit.com/questions/980169-i-got-this-error-when-trying-to-add-tax_applicable_on-field-i-set-the-above-filed-to-credit-but-it-says-its-some-date-class
Merge pull request #158 from minimul/tax-applicable-on

Basic spec to investigate error on Intuit forums https://intuitpartnerpl...
Merge pull request #157 from michaelcheung/master

Add Payment entity to batch request and response.
A more complete JournalEntry spec with proper setting of the line node
Merge pull request #159 from minimul/je-spec

A more complete JournalEntry spec with proper setting of the line node
replaced placed_on with txn_date
Merge pull request #162 from arthurchui/credit-memo-txn-date

replaced placed_on with txn_date
version bump
Added Fault#detail
Merge pull request #163 from arthurchui/fault-detail

Added Fault#detail
added type to BaseReference
added missing spec for new type attribute
Merge pull request #167 from verifyvalid/master

added type to BaseReference
handle nil class error for linked_transaction in line.rb #168
Merge pull request #169 from muhammad-abubakar/master

handle nil class error for linked_transaction in line.rb #168