None.
Rename default logger filename.
Finish memory session provider.

1. finish memory session provider code.
2. add some extra code for session module, like session manager.
3. add session methods to proc.
4. rename a method in tplcache.
5. todo: review the code of session module and fix a bug found in dogo
sample project "/die" page.
Fix a bug of die method in response module.

Bug description: calling `proc.Die()` in HTTP methods or somewhere else will not output custom message to the response body.
Caused by the execution order of proc's methods. After panic in `Die()`,
`Render()` and `__flush()__` will have no chance to run.
Fix a bug.

Bug caused by the reverse execution order of defer statements. `defer
Render(); defer __flush__()` will let `__flush__()` runs before
`Render()`. So, template rendering results are not shown to the response.
Fix a nil memory bug of memory session provider.

Forgot to initialize struct memebers. Shit!
Rename and add fields in Configs.
Add serialization utils and fix session bugs.

1. rename and add some serialization helper functions in utils package.
2. fix a bug in memory session provider, which caused by time unit
conversion error, and result in GC problem.
Delete some debug output statements. Add pager.

1. delete the debug output statements in session module.
2. add a pager util in utils package.
3. add a safe counter in utils package.
4. add test files for testing the new utils.
Delete a method of request and del some comments.
Add upload function to request module.

1. add upload function to request module.
2. drop integer limits.
3. add a config to configuration struct.
Fix upload code.

1. remove the file if any error occurred during uploading.
Merge pull request #10 from ggicci/reconstruction

Reconstruction