Bump pyyaml from 3.12 to 5.1

[dependabot[bot]]

Bumps pyyaml from 3.12 to 5.1.

Changelog

*Sourced from [pyyaml's changelog](https://github.com/yaml/pyyaml/blob/master/CHANGES).* > 5.1 (2019-03-13) > ---------------- > > * [yaml/pyyaml#35](https://github-redirect.dependabot.com/yaml/pyyaml/pull/35) -- Some modernization of the test running > * [yaml/pyyaml#42](https://github-redirect.dependabot.com/yaml/pyyaml/pull/42) -- Install tox in a virtualenv > * [yaml/pyyaml#45](https://github-redirect.dependabot.com/yaml/pyyaml/pull/45) -- Allow colon in a plain scalar in a flow context > * [yaml/pyyaml#48](https://github-redirect.dependabot.com/yaml/pyyaml/pull/48) -- Fix typos > * [yaml/pyyaml#55](https://github-redirect.dependabot.com/yaml/pyyaml/pull/55) -- Improve RepresenterError creation > * [yaml/pyyaml#59](https://github-redirect.dependabot.com/yaml/pyyaml/pull/59) -- Resolves [#57](https://github-redirect.dependabot.com/yaml/pyyaml/issues/57), update readme issues link > * [yaml/pyyaml#60](https://github-redirect.dependabot.com/yaml/pyyaml/pull/60) -- Document and test Python 3.6 support > * [yaml/pyyaml#61](https://github-redirect.dependabot.com/yaml/pyyaml/pull/61) -- Use Travis CI built in pip cache support > * [yaml/pyyaml#62](https://github-redirect.dependabot.com/yaml/pyyaml/pull/62) -- Remove tox workaround for Travis CI > * [yaml/pyyaml#63](https://github-redirect.dependabot.com/yaml/pyyaml/pull/63) -- Adding support to Unicode characters over codepoint 0xffff > * [yaml/pyyaml#65](https://github-redirect.dependabot.com/yaml/pyyaml/pull/65) -- Support unicode literals over codepoint 0xffff > * [yaml/pyyaml#75](https://github-redirect.dependabot.com/yaml/pyyaml/pull/75) -- add 3.12 changelog > * [yaml/pyyaml#76](https://github-redirect.dependabot.com/yaml/pyyaml/pull/76) -- Fallback to Pure Python if Compilation fails > * [yaml/pyyaml#84](https://github-redirect.dependabot.com/yaml/pyyaml/pull/84) -- Drop unsupported Python 3.3 > * [yaml/pyyaml#102](https://github-redirect.dependabot.com/yaml/pyyaml/pull/102) -- Include license file in the generated wheel package > * [yaml/pyyaml#105](https://github-redirect.dependabot.com/yaml/pyyaml/pull/105) -- Removed Python 2.6 & 3.3 support > * [yaml/pyyaml#111](https://github-redirect.dependabot.com/yaml/pyyaml/pull/111) -- Remove commented out Psyco code > * [yaml/pyyaml#129](https://github-redirect.dependabot.com/yaml/pyyaml/pull/129) -- Remove call to `ord` in lib3 emitter code > * [yaml/pyyaml#143](https://github-redirect.dependabot.com/yaml/pyyaml/pull/143) -- Allow to turn off sorting keys in Dumper > * [yaml/pyyaml#149](https://github-redirect.dependabot.com/yaml/pyyaml/pull/149) -- Test on Python 3.7-dev > * [yaml/pyyaml#158](https://github-redirect.dependabot.com/yaml/pyyaml/pull/158) -- Support escaped slash in double quotes "\/" > * [yaml/pyyaml#181](https://github-redirect.dependabot.com/yaml/pyyaml/pull/181) -- Import Hashable from collections.abc > * [yaml/pyyaml#256](https://github-redirect.dependabot.com/yaml/pyyaml/pull/256) -- Make default_flow_style=False > * [yaml/pyyaml#257](https://github-redirect.dependabot.com/yaml/pyyaml/pull/257) -- Deprecate yaml.load and add FullLoader and UnsafeLoader classes > * [yaml/pyyaml#263](https://github-redirect.dependabot.com/yaml/pyyaml/pull/263) -- Windows Appveyor build > > 3.13 (2018-07-05) > ----------------- > > * Resolved issues around PyYAML working in Python 3.7.

Commits

- [`e471e86`](https://github.com/yaml/pyyaml/commit/e471e86bf6dabdad45a1438c20a4a5c033eb9034) Updates for 5.1 release - [`9141e90`](https://github.com/yaml/pyyaml/commit/9141e900d10d280173335b20207e87d4a15e62c6) Windows Appveyor build - [`d6cbff6`](https://github.com/yaml/pyyaml/commit/d6cbff662084dd94bde5421ece495482d1b14454) Skip certain unicode tests when maxunicode not > 0xffff - [`69103ba`](https://github.com/yaml/pyyaml/commit/69103ba255dd807ecb576654e84bd5efba3bad6e) Update .travis.yml to use libyaml 0.2.2 - [`91c9435`](https://github.com/yaml/pyyaml/commit/91c9435bb667dc318c845f5b3e8af36bb84c66eb) Squash/merge pull request [#105](https://github-redirect.dependabot.com/yaml/pyyaml/issues/105) from nnadeau/patch-1 - [`507a464`](https://github.com/yaml/pyyaml/commit/507a464ce62c933bf667b2296a96ad45f0147873) Make default_flow_style=False - [`07c88c6`](https://github.com/yaml/pyyaml/commit/07c88c6c1bee51439a00bc07827980fbb161a1ad) Allow to turn off sorting keys in Dumper - [`611ba39`](https://github.com/yaml/pyyaml/commit/611ba395079026fda2ea67c4ad23eb6351c5aa18) Include license file in the generated wheel package - [`857dff1`](https://github.com/yaml/pyyaml/commit/857dff153d2c9f238d3a68821262b7764aeb44ea) Apply FullLoader/UnsafeLoader changes to lib3 - [`0cedb2a`](https://github.com/yaml/pyyaml/commit/0cedb2a0697b2bc49e4f3841b8d4590b6b15657e) Deprecate/warn usage of yaml.load(input) - Additional commits viewable in [compare view](https://github.com/yaml/pyyaml/compare/3.12...5.1)

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[diogo-fernan]

@AHewitt would you like to reflect the new pyyaml changes from the newer versions? Would be great to have this done for the remainder of the modules also.

[AHewitt]

@AHewitt would you like to reflect the new pyyaml changes from the newer versions? Would be great to have this done for the remainder of the modules also.

Sure I'll have a look at this!