yukihiko-shinoda/pyvelocity

# Title

## Case when trouble

* PyVelocity version:
* Python version:
* Operating System:

### Description

Describe what you were trying to get done.
Tell us what happened, what went wrong, and what you expected to happen.

### What I Did

```console
Paste the command(s) you ran and the output.
If there was a crash, please include the traceback here.
```

## Case when feature request

### Purpose

Describe what you want to achieve.

### Reason

Tell us why you want to achieve purpose.

### Context

Explain background as much as possible
because we may be able to suggest more efficient solution.