Initial SafeCoin implementation.

[ghost]

[dirvine]

Review status: all files reviewed, 1 unresolved discussion, some commit checks pending.
Reviewed files:

• src/coin/mod.rs @ r1
• src/coin/safecoin.rs @ r1
• src/lib.rs @ r1

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^{src/lib.rs, line 47 [r1] (raw file):}
In next iter I would think about renaming this to safecoin, to allow space for other coins later.

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Comments from the review on Reviewable.io

[coveralls]

Coverage decreased (-0.47%) to 92.44% when pulling e71daa7 on s-brian:MAID-1036 into a955ad8 on maidsafe:master.

[ghost]

Review status: all files reviewed, 1 unresolved discussion, some commit checks failed.

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^{src/lib.rs, line 47 [r1] (raw file):}
Sure, it'll need a few more tests as well as additional functionality. I can include additional tests anytime though.

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Comments from the review on Reviewable.io