Improves REST transport + client fixup

[sudorandom]

Fully implements the REST transport to support masks, filters, limit, offset, auth. Also implements #514, which should make building the API client a bit less confusing long-term.

[coveralls]

Coverage decreased (-0.08%) to 85.55% when pulling 52ce024 on sudorandom:client-fixup into d6612c3 on softlayer:master.

[landscape-bot]

Repository health increased by 0.00% when pulling 52ce024 on sudorandom:client-fixup into d6612c3 on softlayer:master.

• 1 new problem was found (including 0 errors and 0 code smells).
• 1 problem was fixed (including 0 errors and 0 code smells).

[coveralls]

Coverage decreased (-0.08%) to 85.55% when pulling 52ce024 on sudorandom:client-fixup into d6612c3 on softlayer:master.

[landscape-bot]

Repository health increased by 0.00% when pulling dbf1b6e on sudorandom:client-fixup into d6612c3 on softlayer:master.

• 1 new problem was found (including 0 errors and 0 code smells).
• 1 problem was fixed (including 0 errors and 0 code smells).

[coveralls]

Coverage decreased (-0.08%) to 85.56% when pulling dbf1b6e on sudorandom:client-fixup into d6612c3 on softlayer:master.

[landscape-bot]

Repository health increased by 0.00% when pulling bed0ffd on sudorandom:client-fixup into d6612c3 on softlayer:master.

• 1 new problem was found (including 0 errors and 0 code smells).
• 1 problem was fixed (including 0 errors and 0 code smells).

[coveralls]

Coverage decreased (-0.07%) to 85.57% when pulling bed0ffd on sudorandom:client-fixup into d6612c3 on softlayer:master.

[landscape-bot]

Repository health increased by 0.00% when pulling 7cb937b on sudorandom:client-fixup into d6612c3 on softlayer:master.

• 1 new problem was found (including 0 errors and 0 code smells).
• 1 problem was fixed (including 0 errors and 0 code smells).

[coveralls]

Coverage decreased (-0.07%) to 85.57% when pulling 7cb937b on sudorandom:client-fixup into d6612c3 on softlayer:master.

[landscape-bot]

Repository health increased by 0.00% when pulling 916d833 on sudorandom:client-fixup into d6612c3 on softlayer:master.

• 1 new problem was found (including 0 errors and 0 code smells).
• 1 problem was fixed (including 0 errors and 0 code smells).

[coveralls]

Coverage decreased (-0.07%) to 85.57% when pulling 916d833 on sudorandom:client-fixup into d6612c3 on softlayer:master.

[landscape-bot]

Repository health increased by 0.00% when pulling 8e06868 on sudorandom:client-fixup into d6612c3 on softlayer:master.

• 1 new problem was found (including 0 errors and 0 code smells).
• 1 problem was fixed (including 0 errors and 0 code smells).

[coveralls]

Coverage decreased (-0.03%) to 85.61% when pulling 8e06868 on sudorandom:client-fixup into d6612c3 on softlayer:master.

[landscape-bot]

Repository health increased by 0.00% when pulling 2fdeaeb on sudorandom:client-fixup into d6612c3 on softlayer:master.

• 1 new problem was found (including 0 errors and 0 code smells).
• 1 problem was fixed (including 0 errors and 0 code smells).

[landscape-bot]

Repository health increased by 0.00% when pulling bd26248 on sudorandom:client-fixup into d6612c3 on softlayer:master.

• 1 new problem was found (including 0 errors and 0 code smells).
• 1 problem was fixed (including 0 errors and 0 code smells).

[coveralls]

Coverage decreased (-0.02%) to 85.61% when pulling bd26248 on sudorandom:client-fixup into d6612c3 on softlayer:master.

[sudorandom]

I'm going to abandon the REST transport. Some of the semantics are the same and the motivation behind improving it has since dissipated.

[sudorandom]

I will lift the other client changes, however.