Begin development of 0.2 series

[brainandforce]

I've started with including package extensions for LinearAlgebra and StaticArraysCore, and leaving CliffordNumbers.normalize unexported due to a conflict with LinearAlgebra.normalize (the package extension makes it available again).

As of now, the major breaking changes are intended to be:

• Dropping support of Julia 1.8 due to the use of package extensions
• Renaming of BitIndex to BladeIndex and BitIndices to BladeIndices
• Removing the TransformedBitIndices type (it may be replaced with a new type at some point)

While this will not make it to the 0.2.0 release, these changes will likely be made in the near future:

• Spinning off the Hamming number tools into a separate package
• More convenient indexing that doesn't require BladeIndex arguments
• Integrating extensions for compatibility with other packages:
  • ChainRulesCore.jl
  • GeometryTypes.jl
  • Quaternions.jl
  • Rotations.jl

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.

Project coverage is 89.00%. Comparing base (ac1de01) to head (9b86eed).
Report is 8 commits behind head on main.

Files with missing lines	Patch %	Lines
ext/CliffordNumbersStaticArraysCoreExt.jl	50.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #29      +/-   ##
==========================================
- Coverage   89.14%   89.00%   -0.14%     
==========================================
  Files          20       23       +3     
  Lines         820      828       +8     
==========================================
+ Hits          731      737       +6     
- Misses         89       91       +2     

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