Float search and shorten command names

[x43x61x69]

First of all, it's really great! I do hope we can have more:

• Support float/double values with integer upper/lower bounds. (e.g. ssearch f 100 200)
• Shorter command names: e.g. ssearch to ss, csearch to cs or even c as there's no conflicts and would be less typing.
• Command for value printing at specific address.
• Re-search within previous results if last csearch founds no results.

Thanks again!