chore: Composer files fixed.

Merge pull request #170 from wp-graphql/release/v0.6.0

Release/v0.6.0

Merge pull request #161 from wp-graphql/release/v0.5.2

Release/v0.5.2

Merge pull request #156 from wp-graphql/release/v0.5.1

Release/v0.5.1

Merge pull request #153 from wp-graphql/release/v0.5.0

Release v0.5.0

Merge pull request #93 from wp-graphql/release/v0.4.1

Release/v0.4.1

Merge pull request #81 from wp-graphql/release/v0.4.0

Release/v0.4.0

Merge pull request #68 from wp-graphql/release/v0.3.5

release/v0.3.5

Merge pull request #60 from wp-graphql/revert-56-revert-55-feature/wp…

…-graphql-v0.6.0-support

Revert "Revert "Adds WPGraphQL v0.6.0 support""

Merge pull request #50 from jasonbahl/feature/#49-login-mutation-uses…

…-old-api

#49 - use register_graphql_mutation