add injection service support for suggestions methods.

[portlek]

closes #439

[portlek]

The only concern I have is that since tab-completes are running more than a regular command execution, this might create some performance issues. so I thought I might add a boolean parameter for @Suggestions annotations that refer to this feature to be enabled. What do you think?

[jpenilla]

The only concern I have is that since tab-completes are running more than a regular command execution, this might create some performance issues. so I thought I might add a boolean parameter for @Suggestions annotations that refer to this feature to be enabled. What do you think?

You can check if the method signature takes exactly one command context and one string in that order (and store the result in a field). If so the old logic can be used.

[portlek]

done. i've also added tests similar to strict suggestions provider. can now be reviewed.

[portlek]

I rebase the PR to 1.9.0-dev again. it's ready to merge.

[portlek]

@jpenilla could you review the PR, please?

[Citymonstret]

This has been addressed in v2.