Remove bintray and jcenter repositories

[Mikhail Lopatkin]

JCenter and Bintray are closing soon. Most of my deps should be in Maven Central already, except bitbucket plugin. I should host the plugin in the Ivy repo somewhere or upload it to the Central as well.

[Mikhail Lopatkin]

Replace jcenter with mavenCentral

JCenter is no longer updated.

Ref #171

→ <<cset 7410289ce3ad>>

[Mikhail Lopatkin]

Replace bintray with submodule and included build for bb plugin

Ref #171

→ <<cset bf2a1067413f>>

[Mikhail Lopatkin]

Add submodules support to bitbucket pipelines

Ref #171

→ <<cset ad8f333a69c9>>

[Mikhail Lopatkin]

Replace jcenter with mavenCentral

JCenter is no longer updated.

Ref #171

→ <<cset 7534a702b251>>

[Mikhail Lopatkin]

Replace bintray with submodule and included build for bb plugin

Ref #171

→ <<cset c180a83394b9>>

[Mikhail Lopatkin]

Add submodules support to bitbucket pipelines

Ref #171

→ <<cset d7cf55ecf946>>

[Mikhail Lopatkin]

Add submodules support to bitbucket pipelines

Ref #171

→ <<cset 7d07dfafc83a>>

[Mikhail Lopatkin]

Replace bintray with submodule and included build for bb plugin

Ref #171

→ <<cset df976e85d1d5>>

[Mikhail Lopatkin]

Update checkout documentation to include submodules

Ref #171

→ <<cset 5243870e2cfa>>