Params: create shared_param (replace global param)
- Remove ndarray from param because it's not managed on remote.
- Fix validation bug in param.
- Create pool_param for media, filter and other. Will replace repeated function.
In dev...
Create PoolParam.
1. Remove get_properties_param.
2. Manage dict of param.
3. Need to manager global_filter from c++ filter
PoolParam: Implement serialize and deserialize.
Format cameraManta file.
Replace 'return None' to 'return', because empty return, return None
Remove cameraManta, because not work.
Use same code of param with media and filter when update param.
- Finish implement reset and set_as_default param
- Remove notification when reset variable.
- adapt code for all media
Merge branch 'pool_param' into dev
add fourth column (prvw) in rec hist

The purpose of that column is to watch the rec file in preview.
Double-click on the cell (eye icon) to execution action.