Fixes #3615

Fixes #3622

Signed-off-by: Andre Kurait <akurait@amazon.com>

Works around an Android Runtime bug where StackWalker would fail to
traverse the stack if a stack frame involves java.lang.Proxy.

Disables StackWalker for Android versions that do not yet include the
fix in https://r.android.com/3548340.

This issue was also reported as linkedin/dexmaker#190.

Fixes #3171

Since I have been merging most of the community contributions,
I realized that I continuously rewrite commit messages with regards
to the `Fixes #id` notation.

Therefore, update the contribution guidelines to clarify that the
fixes part should come at the end (as to not clutter the message).
Also, link to the commit guide that I usually refer to, which also
clarifies that the commit title should start with a verb.

Fixes #3631

Signed-off-by: Taeik Lim <sibera21@gmail.com>

`mockito-inline` is a discontinued artifact, since the inline mockmaker
is now the default mockmaker in `mockito-core`.

Fixes #3621