Updates & minor bugfixes

• removed cargo.lock from the repo
• updated dependencies to latest
• updated edition to 2018
• fixed a panic if a root folder is missing; now it just errors out
• fixed line numbers being off if the file contains a multiline string
• fixed some warnings being lost but only if the file had other warnings too
• removed custom walkdir

Fixed error code when JSON parsing fails

acpplinter was returning an "ok" result if the JSON is malformed and no linting is performed.
This was a very bad thing.

Sped up execution by combining all those regex vectors

There was no reason to run each regex in the list as a separate regex - they can be combined into one with a |, which is much faster because the DFA state machine only needs to visit the first few characters to know if any one branch doesn't need further processing.

Several bugfixes & updated Rust

The linter was extremely prone to eat up warnings due to failing to properly escape string and character sequences.
I had to add full support for raw string literals and characters.
Also added a few options to help test the tool.

Added "expected_fails" property, speed up, updated dependencies

0.5

turns out you can just grab the version for Clap from Cargo! cool. Al…

Fixed a nasty bug with escapes

0.3

oops, an issue with escape chars made some files being completely inv…

Added "exclude_paths" to rules

0.2

add "exclude_paths" feature to enable a rule everywhere except in som…

First Relase

First release for use on the build server, Win only binary for now