Removed createSchemaBridge

[radekmie]

As mentioned in #716, new lifecycle APIs made efficient automatic bridge creation harder (impossible without additional API). This change removes createSchemaBridge completely, meaning that:

• There's no need for bridge in BaseForm state.
• There's no need for check on Bridge and subclasses.
• Anyone who passed SimpleSchema instance to schema prop of BaseForm have to manually create bridge instance.

My motivation is not only the performance gain (strict equality check instead of almost no-op createSchemaBridge checks) and removal of a state property (which was always a copy of props.schema for GraphQL and JSON schemas) but also simplification of the public API - the transformation of a schema to a bridge is now explicit.

[codecov]

Codecov Report

Merging #718 into v3 will decrease coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##               v3     #718      +/-   ##
==========================================
- Coverage   98.02%   97.99%   -0.03%     
==========================================
  Files         162      159       -3     
  Lines        1668     1645      -23     
  Branches      602      598       -4     
==========================================
- Hits         1635     1612      -23     
  Misses          8        8              
  Partials       25       25              

Impacted Files	Coverage Δ
...kages/uniforms-bridge-graphql/src/GraphQLBridge.ts	100.00% <ø> (ø)
...niforms-bridge-json-schema/src/JSONSchemaBridge.ts	98.43% <ø> (-0.02%)	⬇️
...es/uniforms-bridge-simple-schema-2/src/register.ts	100.00% <ø> (ø)
...rms-bridge-simple-schema/src/SimpleSchemaBridge.ts	100.00% <ø> (ø)
...ages/uniforms-bridge-simple-schema/src/register.ts	100.00% <ø> (ø)
packages/uniforms/src/Bridge.ts	100.00% <ø> (ø)
...-bridge-simple-schema-2/src/SimpleSchema2Bridge.ts	100.00% <100.00%> (ø)
packages/uniforms/src/BaseForm.tsx	98.11% <100.00%> (-0.04%)	⬇️
packages/uniforms/src/ValidatedForm.tsx	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 716f0bd...826edac. Read the comment docs.