The following features / updates have been implemented:

Email Invoices
When you email an invoice to a swimmer either in bulk or manually, the email is now formatted like a proper invoice, instead of simply listing the details in the body of the email as before.

Outstanding Invoices
On the "Finance", "Outstanding Invoices" page, you can now search on swimmers name to make finding invoices easier.

I've removed the "Outstanding Invoices" from the group reports page. You can now only view outstanding invoices from within the "Finance" section (if you are an admin).

Emailed Invoice Date
The column "Emailed" when viewing outstanding invoices is used to show the date when the invoice was emailed to the swimmer.

One Off Fees
The system was incorrectly showing one off payments as "Annual Fee" when viewing the outstending invoices section on the swimmers profile page. This has now been fixed. Also, if it is a one off fee, the details you entered when creating the invoice for it are shown as well.

In-Active Swimmers
When a swimmer leaves your club, if you delete their account, all their invoices, swim times etc would also be deleted.

Now, when you set a swimmer as not active, all their records stay in the system, but no more invoices etc are created when you run an invoice period.

Invoice Periods
When you are creating invoice periods for monthly or annual fees, you can now select a group incase you only wanted to create invoices for a certain group.

One off Payments
Now, you can select an individual swimmer to create a one off invoice against instead of creating it for everyone.

Swimmers Logins
Now their photo is on their homepage above the club calendar (if you have uploaded one in their profile)

When they are viewing their PB times, their name is displayed on the popup page.

Group Reports
You can now select to show best swim times between two dates.