Add versioning to billing

app/models/version/account_activity_version.rb

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+class AccountActivityVersion < PaperTrail::Version
+  self.table_name    = :log_account_activities
+  self.sequence_name = :log_account_activities_id_seq
+end

app/models/version/account_version.rb

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+class AccountVersion < PaperTrail::Version
+  self.table_name    = :log_accounts
+  self.sequence_name = :log_accounts_id_seq
+end

app/models/version/bank_statement_version.rb

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+class BankStatementVersion < PaperTrail::Version
+  self.table_name    = :log_bank_statements
+  self.sequence_name = :log_bank_statements_id_seq
+end

app/models/version/bank_transaction_version.rb

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+class BankTransactionVersion < PaperTrail::Version
+  self.table_name    = :log_bank_transactions
+  self.sequence_name = :log_bank_transactions_id_seq
+end

app/models/version/invoice_item_version.rb

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+class InvoiceItemVersion < PaperTrail::Version
+  self.table_name    = :log_invoice_items
+  self.sequence_name = :log_invoice_items_id_seq
+end

app/models/version/invoice_version.rb

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+class InvoiceVersion < PaperTrail::Version
+  self.table_name    = :log_invoices
+  self.sequence_name = :log_invoices_id_seq
+end