Implements #18 issue/feature, the "to _radix_" command:

[mgaggero]

Implements the "to radix" command to quickly and temporary convert a number or the result of an expression to a different radix (for example when working with memory address and segments sizes):

cork> 0xCAFE to dec
51966
cork> 0xCAFE + 2 * 8 * 0x20 to dec
52478
cork> 0xCAFE + 2 * 8 * 0x20
0xccfe
cork> ans to bin
0b1100110011111110
cork> 1234 to hex
0x4d2
cork> (0xCAFE + 2 * 8 * 0x20) to oct
0o146376

[RedDocMD]

Nice work!
I have made a few comments. Please look into them.
Also, I think you may need to run your code through rustfmt.

[mgaggero]

Commit 8b94b9e implements the requested changes.

[RedDocMD]

Thank you for the changes!
I think a test or two would not be amiss. In particular, you can see a given string is actually parsed into a Command::Convert, and if invalid bases are rejected.

[mgaggero]

Thank you for the changes! I think a test or two would not be amiss. In particular, you can see a given string is actually parsed into a Command::Convert, and if invalid bases are rejected.

You're right, sure, I forgot the tests. Added in the last commit.

[RedDocMD]

Thanks a lot! I think I will merge it now, since you have covered all bases pretty nicely.