Bsp-tool

New
* Added support for Ritual Entertainment's Ubertools (Quake III Engine Branch)
* If `autoload` cannot find the specified `.bsp` file a UserWarning is issued
* Support for `ValveBsp` & `RespawnBsp` Xbox360 formats (`.360.bsp`)

Changed
* Moved physics SpecialLumpClasses to `branches/shared/physics.py`
* Fixed up `GAME_LUMP.sprp` errors across `source`, `left4dead` & `source_2013`
* Updated both `base.Struct` & `base.MappedArray`
- built in asserts to verify accurate definitions
- rebuilt `__init__` method, can now generate blank
- added `_bitfields` attr, defines child `base.BitFields`
- added `_classes` attr, overrides class of named attr
- added `as_bytes` method
- added `as_cpp` method
- added `from_bytes` method
- added `from_stream` method
- added `from_tuple` method (replaces old `__init__` behaviour)
* Added `base.BitField` for more reliable bitfield mapping
- behaves similarly to `base.MappedArray`
* Completely refactored `branch_script` detection
- only `file_magic` & `bsp_version` matter (unless `.d3dbsp`)
- `load_bsp` now only accepts a `branch_script` as it's optional argument
* RespawnBsp `.ent` file headers moved to `RespawnBsp.entity_headers`
* RespawnBsp `.bsp_lump` moved to `bsp.external`
- Uses the `respawn.ExternalLumpManager`
- `.bsp_lump` are only opened when accesed via `bsp.external.LUMP_NAME`
* "MegaTest" RAM usage significantly reduced
* `ArkaneBsp` has been rolled into `ValveBsp`
* `LumpHeader` now use `bsp.branch.LumpHeader` instead of `collections.namedtuple`
* Support for `ValveBsp` & `RespawnBsp` x360 (big-endian) formats
* Caught some unexpected behaviour with `GAME_LUMP_CLASS` dict deepcopies

Newly Supported Branches
* Infinity Ward Engine
- Call of Duty 2
- Call of Duty 4: Modern Warfare
* Ion Storm IdTech
- Daikatana
* Respawn Engine
- Titanfall (Xbox360)
* Source Engine
- Half-Life 2 (Xbox)
- Infra
- Momentum Mod
- Orange Box (Xbox360)
- Portal 2 (Xbox360)
- Tactical Intervention
- Vampire the Masquerade: Bloodlines
* Ubertools

Updated Support
* Id Tech 3
- Quake III Arena
- Raven Software Titles
* Infinity Ward Engine
- Call of Duty
* Quake Engine
- Hexen II
* Source Engine
* Titanfall Engine

New
* Identified & thwarted Half-Life: Blue Shift obfuscation

Changed
* Fixed `.as_bytes()` method for `shared.PhysicsCollide`
- byte perfect recreation of input
* Re-implemented `PhysicsCollide` for Source & Titanfall Engines

Newly Supported
* Half-Life: Blue Shift

Updated Support
* Source Engine
* Titanfall Engine

New
* Added `load_bsp` function to identify bsp type
* Added `InfinityWardBsp`, `IdTechBsp`, `RespawnBsp` & `ValveBsp` classes
* Added general support for the PakFile lump
* Added general support for the GameLump lump
* Extension scripts
- `archive.py` extractor for CoD `.iwd` / Quake `.pk3`
- `diff.py` compare bsps for changelogs / study
- `lightmaps.py` bsp lightmap -> `.png`
* Made a basic C++ 17 implementation in `src/`

Changed
* `Bsp` lumps are loaded dynamically, reducing memory usage
- New wrapper classes can be found in `bsp_tool/lumps.py`
* `mods/` changed to `branches/`
- Added subfolders for developers
- Helpful lists for auto-detecting a .bsp's origin
- Renamed `team_fortress2` to `valve/orange_box`
* `LumpClasses` now end up in 3 dictionaries per branch script
- `BASIC_LUMP_CLASSES` for types like `short int`
- `LUMP_CLASSES` for standard `LumpClasses`
- `SPECIAL_LUMP_CLASSES` for irregular types (e.g. PakFile)
- `GAME_LUMP_CLASSES` for GameLump SpecialLumpClasses
* `Bsp`s no longer print to console once loaded
* `Base.Bsp` & subclasses have reserved ALL CAPS member names for lumps only
- `BSP_VERSION, FILE_MAGIC, HEADERS, REVISION` -> `bsp_version, file_magic, headers, revision`

Newly Supported
* IdTech Engine
- Quake II
- Quake 3 Arena
* GoldSrc Engine
* Source Engine
- 2013 SDK
- Alien Swarm branch
- Counter-Strike: Global Offensive
- Half-Life 2
- Left 4 Dead branch

Broken Support
* GoldSrc Engine
- Half-Life: Blue Shift
* IdTech Engine
- Quake
* IW Engine
- Call of Duty
* Source Engine
- Dark Messiah of Might and Magic
- Vindictus

Updated Support
* Source Engine
- Orange Box
* Titanfall Engine
- Titanfall
- Titanfall 2
- Apex Legends