Build: fix SelectionRect sticky-left prop, bump to 4.11.6-grid.1, commit dist/

- src/components/DataSheetGrid.tsx: pass the missing
  stickyLeftColumnNumber prop into <SelectionRect> (tsc caught this
  as a required-prop error after merging PR nick-keller#350's JSX changes on top
  of PR nick-keller#386's SelectionContextType).
- package.json: version -> 4.11.6-grid.1 to mark this as the patched
  line (sticky left columns + resizable columns) built on top of the
  upstream 4.11.6 release.
- dist/: force-added (normally gitignored) since this fork is consumed
  as a git dependency and needs the built output present in the repo.
  Verified npm run build and npm test both pass (16 suites / 100 tests,
  including tests/stickyColumns.test.tsx), and dist/types.d.ts exposes
  stickyLeftColumnNumber, onColumnsResize, and initialColumnWidths.

Author: rodrigoescandon

dist/columns/checkboxColumn.d.ts

@@ -0,0 +1,3 @@
+import { Column } from '../types';
+export declare const checkboxColumn: Partial<Column<boolean, any, string>>;
+//# sourceMappingURL=checkboxColumn.d.ts.map

dist/columns/checkboxColumn.d.ts.map

@@ -0,0 +1,3 @@
+import { Column } from '../types';
+export declare const dateColumn: Partial<Column<Date | null, any, string>>;
+//# sourceMappingURL=dateColumn.d.ts.map

dist/columns/checkboxColumn.js

@@ -0,0 +1,9 @@
+export declare const floatColumn: Partial<import("../types").Column<number | null, {
+    placeholder?: string | undefined;
+    alignRight: boolean;
+    continuousUpdates: boolean;
+    parseUserInput: (value: string) => number | null;
+    formatBlurredInput: (value: number | null) => string;
+    formatInputOnFocus: (value: number | null) => string;
+}, string>>;
+//# sourceMappingURL=floatColumn.d.ts.map