…alls.Fixes#120.

Deal better with multi-statement blocks inside parenthesized method calls

Add print_width config option for rake tasks

As syntax_tree gains wider usage, it'll be very helpful to allowprojects to commit their particular configs within their repo for use byany tool that uses `stree` instead of having to create wrapper scripts,rely on rake tasks that come with their own overhead, or manually keepsettings up to date among all contributors.This set of changes takes inspiration from sorbet to provide users witha simple config file that's also easy to parse and use within the gem.It's a text file that has the exact options you'd pass on the commandline, each on their own line. These are parsed and prepended to thearguments array within `CLI.run`, still allowing for other options topassed from the command line.I decided to restrict this only to the command line options and avoidthe source files argument, opting to let other tools pass their ownsource file from the command line, which is preferable for tools likeeditor integrations that might interact with a single file at a time. Ifusers want to interact with all of their Ruby files at once, the raketasks are perfect for providing larger, static patterns of files. Andsince they use `CLI.run` as well, they'll pick up options from a.streerc file, if present.I also opted for only supporting a single .streerc file at the projectroot. If there's a need for multiple configs or config locations, thiscan be easily extended to look up through a directory structure oraccept an option for a specific config file location (or even adifferent filename). Those felt out of scope for this initial support.

Add support for a simple config file