Change CAN name rules

[quocle108]

Change Description

• A account length can be between 6 and 12 (both inclusive).
• Available characters are a to z and 1 to 5.
• Users whose account length is between 6 and 12 can't create other accounts ending with dot and their username.
• The premium name market is closed at the time of launching the mainnet.
• The premium name market to be opened later will allow to bid username less than 6 and to use it to create other accounts ending with dot and the username.

Deployment Changes

• Deployment Changes

API Changes

• API Changes

Documentation Additions

• Documentation Additions

[quocle108]

@danielalvess FYI:

Account Name Design

• 12 characters max
• May contain: a-z, 1-5, or .
• May not end with .

Names are encoded in base-32:

• . = 0
• 1-5 = 1 - 5
• a-z = 6 - 31
  The 5 MSBs of the uint64 contain the first character. Unused characters are replaced with . (0).

Converting Strings

An account name can be converted to or from strings as follows:
"dan" <=> "dan........."
"dan.larimer" <=> "dan.larimer."

Refer:

EOSIO/eos#56
https://developers.eos.io/welcome/latest/protocol/accounts_and_permissions

[danielvo11]

I'm reviewing!.