Release v0.1.16

What's Changed

• test(admin): cover expand command dispatch by @overtrue in #182
• fix(alias): validate endpoint URLs before saving by @overtrue in #183
• test(admin): cover rebalance status dispatch by @overtrue in #187
• test(admin): cover rebalance start and stop dispatch by @overtrue in #188
• fix(rm): preserve recursive purge semantics by @overtrue in #190
• test(admin): cover decommission CLI dispatch by @overtrue in #189
• test(admin): cover expand status dispatch by @overtrue in #186
• fix(alias): report endpoint validation as usage errors by @overtrue in #185
• fix(alias): reject malformed RC_HOST credentials by @overtrue in #184
• test(alias): cover RC_HOST access-key percent errors by @overtrue in #192
• docs(reference): add rc command reference by @cxymds in #201
• test(alias): cover empty RC_HOST alias name by @overtrue in #200
• test(admin): cover pool CLI dispatch by @overtrue in #193
• test(alias): cover invalid signature JSON error by @overtrue in #194
• test(alias): cover remove config error JSON code by @overtrue in #195
• test(rm): cover recursive purge CLI dispatch by @overtrue in #196
• test(alias): cover non-UTF8 RC_HOST credential decoding by @overtrue in #198
• test(alias): cover missing RC_HOST credentials by @overtrue in #197
• feat(requests): support custom amz headers by @overtrue in #204
• fix(cp): avoid guessed content type for multipart uploads by @overtrue in #203
• chore(release): bump version to 0.1.16 by @overtrue in #205

Full Changelog: v0.1.15...v0.1.16