Add more sample reports

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reports/monthly_cash_flow.lua

@@ -1,26 +1,26 @@
 function generate()
-	year = date.now().year
+    year = date.now().year
 
-	accounts = get_accounts()
-	t = tabulation.new(12)
-	t:title(year .. " Monthly Cash Flow")
-	series = t:series("Income minus expenses")
+    accounts = get_accounts()
+    t = tabulation.new(12)
+    t:title(year .. " Monthly Cash Flow")
+    series = t:series("Income minus expenses")
 
-	for month=1,12 do
-		begin_date = date.new(year, month, 1)
-		end_date = date.new(year, month+1, 1)
+    for month=1,12 do
+        begin_date = date.new(year, month, 1)
+        end_date = date.new(year, month+1, 1)
 
-		t:label(month, tostring(begin_date))
-		cash_flow = 0
+        t:label(month, tostring(begin_date))
+        cash_flow = 0
 
-		for id, acct in pairs(accounts) do
-			if acct.type == account.Expense or acct.type == account.Income then
-				balance = acct:balance(begin_date, end_date)
-				cash_flow = cash_flow - balance.amount
-			end
-		end
-		series:value(month, cash_flow)
-	end
+        for id, acct in pairs(accounts) do
+            if acct.type == account.Expense or acct.type == account.Income then
+                balance = acct:balance(begin_date, end_date)
+                cash_flow = cash_flow - balance.amount
+            end
+        end
+        series:value(month, cash_flow)
+    end
 
-	return t
+    return t
 end