2 - Issue: #94 Merge crypto implementation into SDK

[rg911]

Issue: #94

Merged all crypto implementations into the SDK

Dragon Milestone / 2: https://github.com/nemtech/nem2-sdk-typescript-javascript/milestone/2

** Note: This PR includes Encoders merge changes in #168

[coveralls]

Pull Request Test Coverage Report for Build 453

• 1224 of 1293 (94.66%) changed or added relevant lines in 34 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+4.8%) to 83.577%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/core/crypto/KeyPair.ts	16	17	94.12%
src/core/format/RawUInt64.ts	33	34	97.06%
src/core/crypto/SHA3Hasher.ts	15	18	83.33%
src/core/format/Convert.ts	57	63	90.48%
src/core/format/RawAddress.ts	37	44	84.09%
src/core/crypto/Utilities.ts	107	120	89.17%
src/core/crypto/nacl_catapult.ts	675	688	98.11%
src/core/crypto/Crypto.ts	77	102	75.49%

Totals
Change from base Build 442:	4.8%
Covered Lines:	2882
Relevant Lines:	3289

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 464

• 1252 of 1293 (96.83%) changed or added relevant lines in 34 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+6.2%) to 84.944%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/core/format/RawUInt64.ts	33	34	97.06%
src/core/crypto/Crypto.ts	97	102	95.1%
src/core/format/Convert.ts	57	63	90.48%
src/core/format/RawAddress.ts	37	44	84.09%
src/core/crypto/Utilities.ts	110	120	91.67%
src/core/crypto/nacl_catapult.ts	676	688	98.26%

Totals
Change from base Build 442:	6.2%
Covered Lines:	2910
Relevant Lines:	3289

---

💛 - Coveralls