Wcmatch

- **FIX**: Fix logic related to dot files and `GLOBSTAR`. Recursive directory search should return all dot files, which should then be filtered by the patterns. They should not be excluded before being filtered by the pattern.

- **FIX**: If we only have one pattern (exclusion patterns not included) we can disable unique path filtering on returns as you cannot have a duplicate path with only one inclusion pattern.

- **NEW**: Tilde user expansion support via the new `GLOBTILDE` flag.
- **NEW**: `glob` by default now returns only unique results, regardless of whether multiple patterns that match the
same file were provided, or even when `BRACE` or `SPLIT` expansion produces new patterns that match the same file.
- **NEW**: A new flag called `NOUNIQUE` has been added that makes `glob` act like Bash, which will return the same file multiple times if multiple patterns match it, whether provided directly or due to the result of `BRACE` or `SPLIT` expansion.
- **NEW**: Limit number of patterns that can be processed (expanded and otherwise) to 1000. Allow user to change this value via an optional `limit` parameter in related API functions.
- **FIX**: Matching functions that receive multiple patterns, or that receive a single pattern that expands to multiple, will filter out duplicate patterns in order avoid redundant matching. While the `WcMatch` class crawls the file system, it utilizes the aforementioned matching functions in it's operation, and indirectly takes advantage of this. `glob` (and related functions: `rglob`, `iglob`, etc.) will also filter redundant patterns except when `NOUNIQUE` is enabled, this is so they can better act like Bash when `NOUNIQUE` is enabled.
- **FIX**: `BRACE` is now processed before `SPLIT` in order to fix a number of edge cases.
- **FIX**: `RAWCHARS` was inconsistently applied at different times depending on what was calling it. It is now applied first followed by `BRACE`, `SPLIT`, and finally `GLOBTILDE`.

- **NEW**: Add new parameter to `glob` related functions (except in `pathlib`) called `root_dir` that allows a user to specify a different working directory with either a string or path-like object. Path-like inputs are only supported on Python 3.6+.
- **NEW**: Support path-like objects for `globmatch` and `globfilter` path inputs. Path-like inputs are only supported on Python 3.6+.
- **FIX**: Filter functions should not alter the slashes of files it filters. Filtered strings and paths should be returned unaltered.

- **FIX**: Rework `glob` relative path handling so internally it is indistinguishable from when it is given no relative
path and uses the current working directory. This fixes an issue where `pathlib` couldn't handle negate patterns
properly (`!negate`).

- **FIX**: Fix case where a `GLOBSTAR` pattern, followed by a slash, was not disabling `MATCHBASE`.
- **FIX**: Fix `pathlib` relative path resolution in glob implementations.